diff --git a/core/pom.xml b/core/pom.xml
index 92de6d1a5..6ec553fb0 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -39,10 +39,6 @@
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
     </dependency>
-    <dependency>
-      <groupId>com.google.errorprone</groupId>
-      <artifactId>javac-shaded</artifactId>
-    </dependency>
 
     <!-- Compile-time dependencies -->
     <dependency>
@@ -83,14 +79,26 @@
       <plugin>
         <artifactId>maven-javadoc-plugin</artifactId>
         <configuration>
-          <source>8</source>
+          <source>11</source>
           <encoding>UTF-8</encoding>
           <docencoding>UTF-8</docencoding>
           <charset>UTF-8</charset>
           <links>
+            <!--
+            TODO: try again in JDK 12: https://bugs.openjdk.java.net/browse/JDK-8212233
             <link>https://guava.dev/releases/${guava.version}/api/docs/</link>
-            <link>https://docs.oracle.com/javase/8/docs/api/</link>
+            -->
+            <link>https://docs.oracle.com/en/java/javase/11/docs/api</link>
           </links>
+          <additionalJOptions>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.file=com.google.googlejavaformat</additionalJOption>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.main=com.google.googlejavaformat</additionalJOption>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.parser=com.google.googlejavaformat</additionalJOption>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.tree=com.google.googlejavaformat</additionalJOption>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.util=com.google.googlejavaformat</additionalJOption>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.code=com.google.googlejavaformat</additionalJOption>
+            <additionalJOption>--add-exports=jdk.compiler/com.sun.tools.javac.api=com.google.googlejavaformat</additionalJOption>
+          </additionalJOptions>
         </configuration>
         <executions>
           <execution>
@@ -238,6 +246,14 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>11</source>
+          <target>11</target>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
 </project>
diff --git a/core/src/main/java/com/google/googlejavaformat/java/DimensionHelpers.java b/core/src/main/java/com/google/googlejavaformat/java/DimensionHelpers.java
index a18db691e..4bd19bee3 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/DimensionHelpers.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/DimensionHelpers.java
@@ -15,16 +15,16 @@
 package com.google.googlejavaformat.java;
 
 import com.google.common.collect.ImmutableList;
+import com.sun.source.tree.AnnotatedTypeTree;
+import com.sun.source.tree.AnnotationTree;
+import com.sun.source.tree.ArrayTypeTree;
+import com.sun.source.tree.Tree;
+import com.sun.tools.javac.tree.JCTree;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Deque;
 import java.util.List;
-import org.openjdk.source.tree.AnnotatedTypeTree;
-import org.openjdk.source.tree.AnnotationTree;
-import org.openjdk.source.tree.ArrayTypeTree;
-import org.openjdk.source.tree.Tree;
-import org.openjdk.tools.javac.tree.JCTree;
 
 /**
  * Utilities for working with array dimensions.
diff --git a/core/src/main/java/com/google/googlejavaformat/java/Formatter.java b/core/src/main/java/com/google/googlejavaformat/java/Formatter.java
index e53f79fcf..59a1a5e29 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/Formatter.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/Formatter.java
@@ -31,26 +31,26 @@
 import com.google.googlejavaformat.Newlines;
 import com.google.googlejavaformat.Op;
 import com.google.googlejavaformat.OpsBuilder;
+import com.sun.tools.javac.file.JavacFileManager;
+import com.sun.tools.javac.main.Option;
+import com.sun.tools.javac.parser.JavacParser;
+import com.sun.tools.javac.parser.ParserFactory;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Options;
 import java.io.IOError;
 import java.io.IOException;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
-import org.openjdk.javax.tools.Diagnostic;
-import org.openjdk.javax.tools.DiagnosticCollector;
-import org.openjdk.javax.tools.DiagnosticListener;
-import org.openjdk.javax.tools.JavaFileObject;
-import org.openjdk.javax.tools.SimpleJavaFileObject;
-import org.openjdk.javax.tools.StandardLocation;
-import org.openjdk.tools.javac.file.JavacFileManager;
-import org.openjdk.tools.javac.main.Option;
-import org.openjdk.tools.javac.parser.JavacParser;
-import org.openjdk.tools.javac.parser.ParserFactory;
-import org.openjdk.tools.javac.tree.JCTree.JCCompilationUnit;
-import org.openjdk.tools.javac.util.Context;
-import org.openjdk.tools.javac.util.Log;
-import org.openjdk.tools.javac.util.Options;
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.DiagnosticListener;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.StandardLocation;
 
 /**
  * This is google-java-format, a new Java formatter that follows the Google Java Style Guide quite
diff --git a/core/src/main/java/com/google/googlejavaformat/java/FormatterException.java b/core/src/main/java/com/google/googlejavaformat/java/FormatterException.java
index 972b8ce06..3ccb44a46 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/FormatterException.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/FormatterException.java
@@ -20,8 +20,8 @@
 import com.google.common.collect.Iterables;
 import com.google.googlejavaformat.FormatterDiagnostic;
 import java.util.List;
-import org.openjdk.javax.tools.Diagnostic;
-import org.openjdk.javax.tools.JavaFileObject;
+import javax.tools.Diagnostic;
+import javax.tools.JavaFileObject;
 
 /** Checked exception class for formatter errors. */
 public final class FormatterException extends Exception {
diff --git a/core/src/main/java/com/google/googlejavaformat/java/ImportOrderer.java b/core/src/main/java/com/google/googlejavaformat/java/ImportOrderer.java
index a364c15e8..a82715e0a 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/ImportOrderer.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/ImportOrderer.java
@@ -25,13 +25,13 @@
 import com.google.googlejavaformat.Newlines;
 import com.google.googlejavaformat.java.JavaFormatterOptions.Style;
 import com.google.googlejavaformat.java.JavaInput.Tok;
+import com.sun.tools.javac.parser.Tokens.TokenKind;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Optional;
 import java.util.function.BiFunction;
 import java.util.stream.Stream;
-import org.openjdk.tools.javac.parser.Tokens.TokenKind;
 
 /** Orders imports in Java source code. */
 public class ImportOrderer {
diff --git a/core/src/main/java/com/google/googlejavaformat/java/JavaInput.java b/core/src/main/java/com/google/googlejavaformat/java/JavaInput.java
index 4781d5aed..e5e4f4580 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/JavaInput.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/JavaInput.java
@@ -33,24 +33,24 @@
 import com.google.googlejavaformat.Input;
 import com.google.googlejavaformat.Newlines;
 import com.google.googlejavaformat.java.JavacTokens.RawTok;
+import com.sun.tools.javac.file.JavacFileManager;
+import com.sun.tools.javac.parser.Tokens.TokenKind;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Log.DeferredDiagnosticHandler;
 import java.io.IOException;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.List;
-import org.openjdk.javax.tools.Diagnostic;
-import org.openjdk.javax.tools.DiagnosticCollector;
-import org.openjdk.javax.tools.DiagnosticListener;
-import org.openjdk.javax.tools.JavaFileObject;
-import org.openjdk.javax.tools.JavaFileObject.Kind;
-import org.openjdk.javax.tools.SimpleJavaFileObject;
-import org.openjdk.tools.javac.file.JavacFileManager;
-import org.openjdk.tools.javac.parser.Tokens.TokenKind;
-import org.openjdk.tools.javac.tree.JCTree.JCCompilationUnit;
-import org.openjdk.tools.javac.util.Context;
-import org.openjdk.tools.javac.util.Log;
-import org.openjdk.tools.javac.util.Log.DeferredDiagnosticHandler;
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.DiagnosticListener;
+import javax.tools.JavaFileObject;
+import javax.tools.JavaFileObject.Kind;
+import javax.tools.SimpleJavaFileObject;
 
 /** {@code JavaInput} extends {@link Input} to represent a Java input document. */
 public final class JavaInput extends Input {
diff --git a/core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java b/core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java
index 23cae5f0c..06543598a 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java
@@ -29,19 +29,19 @@
 import static com.google.googlejavaformat.java.Trees.operatorName;
 import static com.google.googlejavaformat.java.Trees.precedence;
 import static com.google.googlejavaformat.java.Trees.skipParen;
+import static com.sun.source.tree.Tree.Kind.ANNOTATION;
+import static com.sun.source.tree.Tree.Kind.ARRAY_ACCESS;
+import static com.sun.source.tree.Tree.Kind.ASSIGNMENT;
+import static com.sun.source.tree.Tree.Kind.BLOCK;
+import static com.sun.source.tree.Tree.Kind.EXTENDS_WILDCARD;
+import static com.sun.source.tree.Tree.Kind.IF;
+import static com.sun.source.tree.Tree.Kind.METHOD_INVOCATION;
+import static com.sun.source.tree.Tree.Kind.NEW_ARRAY;
+import static com.sun.source.tree.Tree.Kind.NEW_CLASS;
+import static com.sun.source.tree.Tree.Kind.STRING_LITERAL;
+import static com.sun.source.tree.Tree.Kind.UNION_TYPE;
+import static com.sun.source.tree.Tree.Kind.VARIABLE;
 import static java.util.stream.Collectors.toList;
-import static org.openjdk.source.tree.Tree.Kind.ANNOTATION;
-import static org.openjdk.source.tree.Tree.Kind.ARRAY_ACCESS;
-import static org.openjdk.source.tree.Tree.Kind.ASSIGNMENT;
-import static org.openjdk.source.tree.Tree.Kind.BLOCK;
-import static org.openjdk.source.tree.Tree.Kind.EXTENDS_WILDCARD;
-import static org.openjdk.source.tree.Tree.Kind.IF;
-import static org.openjdk.source.tree.Tree.Kind.METHOD_INVOCATION;
-import static org.openjdk.source.tree.Tree.Kind.NEW_ARRAY;
-import static org.openjdk.source.tree.Tree.Kind.NEW_CLASS;
-import static org.openjdk.source.tree.Tree.Kind.STRING_LITERAL;
-import static org.openjdk.source.tree.Tree.Kind.UNION_TYPE;
-import static org.openjdk.source.tree.Tree.Kind.VARIABLE;
 
 import com.google.common.base.MoreObjects;
 import com.google.common.base.Predicate;
@@ -69,6 +69,72 @@
 import com.google.googlejavaformat.Output.BreakTag;
 import com.google.googlejavaformat.java.DimensionHelpers.SortedDims;
 import com.google.googlejavaformat.java.DimensionHelpers.TypeWithDims;
+import com.sun.source.tree.AnnotatedTypeTree;
+import com.sun.source.tree.AnnotationTree;
+import com.sun.source.tree.ArrayAccessTree;
+import com.sun.source.tree.ArrayTypeTree;
+import com.sun.source.tree.AssertTree;
+import com.sun.source.tree.AssignmentTree;
+import com.sun.source.tree.BinaryTree;
+import com.sun.source.tree.BlockTree;
+import com.sun.source.tree.BreakTree;
+import com.sun.source.tree.CaseTree;
+import com.sun.source.tree.CatchTree;
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.CompoundAssignmentTree;
+import com.sun.source.tree.ConditionalExpressionTree;
+import com.sun.source.tree.ContinueTree;
+import com.sun.source.tree.DirectiveTree;
+import com.sun.source.tree.DoWhileLoopTree;
+import com.sun.source.tree.EmptyStatementTree;
+import com.sun.source.tree.EnhancedForLoopTree;
+import com.sun.source.tree.ExportsTree;
+import com.sun.source.tree.ExpressionStatementTree;
+import com.sun.source.tree.ExpressionTree;
+import com.sun.source.tree.ForLoopTree;
+import com.sun.source.tree.IdentifierTree;
+import com.sun.source.tree.IfTree;
+import com.sun.source.tree.ImportTree;
+import com.sun.source.tree.InstanceOfTree;
+import com.sun.source.tree.IntersectionTypeTree;
+import com.sun.source.tree.LabeledStatementTree;
+import com.sun.source.tree.LambdaExpressionTree;
+import com.sun.source.tree.LiteralTree;
+import com.sun.source.tree.MemberReferenceTree;
+import com.sun.source.tree.MemberSelectTree;
+import com.sun.source.tree.MethodInvocationTree;
+import com.sun.source.tree.MethodTree;
+import com.sun.source.tree.ModifiersTree;
+import com.sun.source.tree.ModuleTree;
+import com.sun.source.tree.NewArrayTree;
+import com.sun.source.tree.NewClassTree;
+import com.sun.source.tree.OpensTree;
+import com.sun.source.tree.ParameterizedTypeTree;
+import com.sun.source.tree.ParenthesizedTree;
+import com.sun.source.tree.PrimitiveTypeTree;
+import com.sun.source.tree.ProvidesTree;
+import com.sun.source.tree.RequiresTree;
+import com.sun.source.tree.ReturnTree;
+import com.sun.source.tree.StatementTree;
+import com.sun.source.tree.SwitchTree;
+import com.sun.source.tree.SynchronizedTree;
+import com.sun.source.tree.ThrowTree;
+import com.sun.source.tree.Tree;
+import com.sun.source.tree.TryTree;
+import com.sun.source.tree.TypeCastTree;
+import com.sun.source.tree.TypeParameterTree;
+import com.sun.source.tree.UnaryTree;
+import com.sun.source.tree.UnionTypeTree;
+import com.sun.source.tree.UsesTree;
+import com.sun.source.tree.VariableTree;
+import com.sun.source.tree.WhileLoopTree;
+import com.sun.source.tree.WildcardTree;
+import com.sun.source.util.TreePath;
+import com.sun.source.util.TreePathScanner;
+import com.sun.tools.javac.code.Flags;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.TreeScanner;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -81,74 +147,8 @@
 import java.util.Set;
 import java.util.regex.Pattern;
 import java.util.stream.Stream;
+import javax.lang.model.element.Name;
 import org.checkerframework.checker.nullness.qual.Nullable;
-import org.openjdk.javax.lang.model.element.Name;
-import org.openjdk.source.tree.AnnotatedTypeTree;
-import org.openjdk.source.tree.AnnotationTree;
-import org.openjdk.source.tree.ArrayAccessTree;
-import org.openjdk.source.tree.ArrayTypeTree;
-import org.openjdk.source.tree.AssertTree;
-import org.openjdk.source.tree.AssignmentTree;
-import org.openjdk.source.tree.BinaryTree;
-import org.openjdk.source.tree.BlockTree;
-import org.openjdk.source.tree.BreakTree;
-import org.openjdk.source.tree.CaseTree;
-import org.openjdk.source.tree.CatchTree;
-import org.openjdk.source.tree.ClassTree;
-import org.openjdk.source.tree.CompilationUnitTree;
-import org.openjdk.source.tree.CompoundAssignmentTree;
-import org.openjdk.source.tree.ConditionalExpressionTree;
-import org.openjdk.source.tree.ContinueTree;
-import org.openjdk.source.tree.DirectiveTree;
-import org.openjdk.source.tree.DoWhileLoopTree;
-import org.openjdk.source.tree.EmptyStatementTree;
-import org.openjdk.source.tree.EnhancedForLoopTree;
-import org.openjdk.source.tree.ExportsTree;
-import org.openjdk.source.tree.ExpressionStatementTree;
-import org.openjdk.source.tree.ExpressionTree;
-import org.openjdk.source.tree.ForLoopTree;
-import org.openjdk.source.tree.IdentifierTree;
-import org.openjdk.source.tree.IfTree;
-import org.openjdk.source.tree.ImportTree;
-import org.openjdk.source.tree.InstanceOfTree;
-import org.openjdk.source.tree.IntersectionTypeTree;
-import org.openjdk.source.tree.LabeledStatementTree;
-import org.openjdk.source.tree.LambdaExpressionTree;
-import org.openjdk.source.tree.LiteralTree;
-import org.openjdk.source.tree.MemberReferenceTree;
-import org.openjdk.source.tree.MemberSelectTree;
-import org.openjdk.source.tree.MethodInvocationTree;
-import org.openjdk.source.tree.MethodTree;
-import org.openjdk.source.tree.ModifiersTree;
-import org.openjdk.source.tree.ModuleTree;
-import org.openjdk.source.tree.NewArrayTree;
-import org.openjdk.source.tree.NewClassTree;
-import org.openjdk.source.tree.OpensTree;
-import org.openjdk.source.tree.ParameterizedTypeTree;
-import org.openjdk.source.tree.ParenthesizedTree;
-import org.openjdk.source.tree.PrimitiveTypeTree;
-import org.openjdk.source.tree.ProvidesTree;
-import org.openjdk.source.tree.RequiresTree;
-import org.openjdk.source.tree.ReturnTree;
-import org.openjdk.source.tree.StatementTree;
-import org.openjdk.source.tree.SwitchTree;
-import org.openjdk.source.tree.SynchronizedTree;
-import org.openjdk.source.tree.ThrowTree;
-import org.openjdk.source.tree.Tree;
-import org.openjdk.source.tree.TryTree;
-import org.openjdk.source.tree.TypeCastTree;
-import org.openjdk.source.tree.TypeParameterTree;
-import org.openjdk.source.tree.UnaryTree;
-import org.openjdk.source.tree.UnionTypeTree;
-import org.openjdk.source.tree.UsesTree;
-import org.openjdk.source.tree.VariableTree;
-import org.openjdk.source.tree.WhileLoopTree;
-import org.openjdk.source.tree.WildcardTree;
-import org.openjdk.source.util.TreePath;
-import org.openjdk.source.util.TreePathScanner;
-import org.openjdk.tools.javac.code.Flags;
-import org.openjdk.tools.javac.tree.JCTree;
-import org.openjdk.tools.javac.tree.TreeScanner;
 
 /**
  * An AST visitor that builds a stream of {@link Op}s to format from the given {@link
diff --git a/core/src/main/java/com/google/googlejavaformat/java/JavacTokens.java b/core/src/main/java/com/google/googlejavaformat/java/JavacTokens.java
index 72f8bce3a..a8c9efd2c 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/JavacTokens.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/JavacTokens.java
@@ -18,16 +18,16 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
+import com.sun.tools.javac.parser.JavaTokenizer;
+import com.sun.tools.javac.parser.Scanner;
+import com.sun.tools.javac.parser.ScannerFactory;
+import com.sun.tools.javac.parser.Tokens.Comment;
+import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle;
+import com.sun.tools.javac.parser.Tokens.Token;
+import com.sun.tools.javac.parser.Tokens.TokenKind;
+import com.sun.tools.javac.parser.UnicodeReader;
+import com.sun.tools.javac.util.Context;
 import java.util.Set;
-import org.openjdk.tools.javac.parser.JavaTokenizer;
-import org.openjdk.tools.javac.parser.Scanner;
-import org.openjdk.tools.javac.parser.ScannerFactory;
-import org.openjdk.tools.javac.parser.Tokens.Comment;
-import org.openjdk.tools.javac.parser.Tokens.Comment.CommentStyle;
-import org.openjdk.tools.javac.parser.Tokens.Token;
-import org.openjdk.tools.javac.parser.Tokens.TokenKind;
-import org.openjdk.tools.javac.parser.UnicodeReader;
-import org.openjdk.tools.javac.util.Context;
 
 /** A wrapper around javac's lexer. */
 class JavacTokens {
diff --git a/core/src/main/java/com/google/googlejavaformat/java/ModifierOrderer.java b/core/src/main/java/com/google/googlejavaformat/java/ModifierOrderer.java
index 239973226..f7f610be7 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/ModifierOrderer.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/ModifierOrderer.java
@@ -23,6 +23,7 @@
 import com.google.common.collect.TreeRangeMap;
 import com.google.googlejavaformat.Input.Tok;
 import com.google.googlejavaformat.Input.Token;
+import com.sun.tools.javac.parser.Tokens.TokenKind;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -30,8 +31,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
-import org.openjdk.javax.lang.model.element.Modifier;
-import org.openjdk.tools.javac.parser.Tokens.TokenKind;
+import javax.lang.model.element.Modifier;
 
 /** Fixes sequences of modifiers to be in JLS order. */
 final class ModifierOrderer {
diff --git a/core/src/main/java/com/google/googlejavaformat/java/RemoveUnusedImports.java b/core/src/main/java/com/google/googlejavaformat/java/RemoveUnusedImports.java
index bd2fa8171..8bc2f0541 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/RemoveUnusedImports.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/RemoveUnusedImports.java
@@ -29,42 +29,42 @@
 import com.google.common.collect.TreeRangeMap;
 import com.google.common.collect.TreeRangeSet;
 import com.google.googlejavaformat.Newlines;
+import com.sun.source.doctree.DocCommentTree;
+import com.sun.source.doctree.ReferenceTree;
+import com.sun.source.tree.IdentifierTree;
+import com.sun.source.tree.ImportTree;
+import com.sun.source.tree.Tree;
+import com.sun.source.util.DocTreePath;
+import com.sun.source.util.DocTreePathScanner;
+import com.sun.source.util.TreePathScanner;
+import com.sun.source.util.TreeScanner;
+import com.sun.tools.javac.api.JavacTrees;
+import com.sun.tools.javac.file.JavacFileManager;
+import com.sun.tools.javac.main.Option;
+import com.sun.tools.javac.parser.JavacParser;
+import com.sun.tools.javac.parser.ParserFactory;
+import com.sun.tools.javac.tree.DCTree;
+import com.sun.tools.javac.tree.DCTree.DCReference;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
+import com.sun.tools.javac.tree.JCTree.JCIdent;
+import com.sun.tools.javac.tree.JCTree.JCImport;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Options;
 import java.io.IOError;
 import java.io.IOException;
 import java.net.URI;
 import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
-import org.openjdk.javax.tools.Diagnostic;
-import org.openjdk.javax.tools.DiagnosticCollector;
-import org.openjdk.javax.tools.DiagnosticListener;
-import org.openjdk.javax.tools.JavaFileObject;
-import org.openjdk.javax.tools.SimpleJavaFileObject;
-import org.openjdk.javax.tools.StandardLocation;
-import org.openjdk.source.doctree.DocCommentTree;
-import org.openjdk.source.doctree.ReferenceTree;
-import org.openjdk.source.tree.IdentifierTree;
-import org.openjdk.source.tree.ImportTree;
-import org.openjdk.source.tree.Tree;
-import org.openjdk.source.util.DocTreePath;
-import org.openjdk.source.util.DocTreePathScanner;
-import org.openjdk.source.util.TreePathScanner;
-import org.openjdk.source.util.TreeScanner;
-import org.openjdk.tools.javac.api.JavacTrees;
-import org.openjdk.tools.javac.file.JavacFileManager;
-import org.openjdk.tools.javac.main.Option;
-import org.openjdk.tools.javac.parser.JavacParser;
-import org.openjdk.tools.javac.parser.ParserFactory;
-import org.openjdk.tools.javac.tree.DCTree;
-import org.openjdk.tools.javac.tree.DCTree.DCReference;
-import org.openjdk.tools.javac.tree.JCTree;
-import org.openjdk.tools.javac.tree.JCTree.JCCompilationUnit;
-import org.openjdk.tools.javac.tree.JCTree.JCFieldAccess;
-import org.openjdk.tools.javac.tree.JCTree.JCIdent;
-import org.openjdk.tools.javac.tree.JCTree.JCImport;
-import org.openjdk.tools.javac.util.Context;
-import org.openjdk.tools.javac.util.Log;
-import org.openjdk.tools.javac.util.Options;
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.DiagnosticListener;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.StandardLocation;
 
 /**
  * Removes unused imports from a source file. Imports that are only used in javadoc are also
@@ -138,7 +138,7 @@ private void scanJavadoc() {
     // scan javadoc comments, checking for references to imported types
     class DocTreeScanner extends DocTreePathScanner<Void, Void> {
       @Override
-      public Void visitIdentifier(org.openjdk.source.doctree.IdentifierTree node, Void aVoid) {
+      public Void visitIdentifier(com.sun.source.doctree.IdentifierTree node, Void aVoid) {
         return null;
       }
 
diff --git a/core/src/main/java/com/google/googlejavaformat/java/StringWrapper.java b/core/src/main/java/com/google/googlejavaformat/java/StringWrapper.java
index 6dfca5335..6bb63db3a 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/StringWrapper.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/StringWrapper.java
@@ -26,6 +26,21 @@
 import com.google.common.collect.Range;
 import com.google.common.collect.TreeRangeMap;
 import com.google.googlejavaformat.Newlines;
+import com.sun.source.tree.BinaryTree;
+import com.sun.source.tree.LiteralTree;
+import com.sun.source.tree.MemberSelectTree;
+import com.sun.source.tree.Tree;
+import com.sun.source.tree.Tree.Kind;
+import com.sun.source.util.TreePath;
+import com.sun.source.util.TreePathScanner;
+import com.sun.tools.javac.file.JavacFileManager;
+import com.sun.tools.javac.parser.JavacParser;
+import com.sun.tools.javac.parser.ParserFactory;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Options;
+import com.sun.tools.javac.util.Position;
 import java.io.IOException;
 import java.io.UncheckedIOException;
 import java.net.URI;
@@ -37,27 +52,12 @@
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Stream;
-import org.openjdk.javax.tools.Diagnostic;
-import org.openjdk.javax.tools.DiagnosticCollector;
-import org.openjdk.javax.tools.DiagnosticListener;
-import org.openjdk.javax.tools.JavaFileObject;
-import org.openjdk.javax.tools.SimpleJavaFileObject;
-import org.openjdk.javax.tools.StandardLocation;
-import org.openjdk.source.tree.BinaryTree;
-import org.openjdk.source.tree.LiteralTree;
-import org.openjdk.source.tree.MemberSelectTree;
-import org.openjdk.source.tree.Tree;
-import org.openjdk.source.tree.Tree.Kind;
-import org.openjdk.source.util.TreePath;
-import org.openjdk.source.util.TreePathScanner;
-import org.openjdk.tools.javac.file.JavacFileManager;
-import org.openjdk.tools.javac.parser.JavacParser;
-import org.openjdk.tools.javac.parser.ParserFactory;
-import org.openjdk.tools.javac.tree.JCTree;
-import org.openjdk.tools.javac.util.Context;
-import org.openjdk.tools.javac.util.Log;
-import org.openjdk.tools.javac.util.Options;
-import org.openjdk.tools.javac.util.Position;
+import javax.tools.Diagnostic;
+import javax.tools.DiagnosticCollector;
+import javax.tools.DiagnosticListener;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.StandardLocation;
 
 /** Wraps string literals that exceed the column limit. */
 public final class StringWrapper {
diff --git a/core/src/main/java/com/google/googlejavaformat/java/Trees.java b/core/src/main/java/com/google/googlejavaformat/java/Trees.java
index 69b954c4f..397dacae6 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/Trees.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/Trees.java
@@ -14,21 +14,21 @@
 
 package com.google.googlejavaformat.java;
 
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.CompoundAssignmentTree;
+import com.sun.source.tree.ExpressionTree;
+import com.sun.source.tree.IdentifierTree;
+import com.sun.source.tree.MemberSelectTree;
+import com.sun.source.tree.MethodInvocationTree;
+import com.sun.source.tree.ParenthesizedTree;
+import com.sun.source.tree.Tree;
+import com.sun.source.util.TreePath;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.Pretty;
+import com.sun.tools.javac.tree.TreeInfo;
 import java.io.IOError;
 import java.io.IOException;
-import org.openjdk.javax.lang.model.element.Name;
-import org.openjdk.source.tree.ClassTree;
-import org.openjdk.source.tree.CompoundAssignmentTree;
-import org.openjdk.source.tree.ExpressionTree;
-import org.openjdk.source.tree.IdentifierTree;
-import org.openjdk.source.tree.MemberSelectTree;
-import org.openjdk.source.tree.MethodInvocationTree;
-import org.openjdk.source.tree.ParenthesizedTree;
-import org.openjdk.source.tree.Tree;
-import org.openjdk.source.util.TreePath;
-import org.openjdk.tools.javac.tree.JCTree;
-import org.openjdk.tools.javac.tree.Pretty;
-import org.openjdk.tools.javac.tree.TreeInfo;
+import javax.lang.model.element.Name;
 
 /** Utilities for working with {@link Tree}s. */
 class Trees {
diff --git a/pom.xml b/pom.xml
index edb5bbb86..a0952ec9d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -96,7 +96,6 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <java.version>1.8</java.version>
     <guava.version>28.1-jre</guava.version>
-    <javac.version>9+181-r4173-1</javac.version>
     <truth.version>1.0</truth.version>
     <checker.version>2.0.0</checker.version>
   </properties>
@@ -109,11 +108,6 @@
         <artifactId>guava</artifactId>
         <version>${guava.version}</version>
       </dependency>
-      <dependency>
-        <groupId>com.google.errorprone</groupId>
-        <artifactId>javac-shaded</artifactId>
-        <version>${javac.version}</version>
-      </dependency>
 
       <!-- Compile-time dependencies -->
       <dependency>
@@ -166,7 +160,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.0.0</version>
+        <version>3.1.1</version>
         </plugin>
         <plugin>
           <artifactId>maven-gpg-plugin</artifactId>
@@ -189,6 +183,13 @@
           <compilerArgs>
             <arg>-XDcompilePolicy=simple</arg>
             <arg>-Xplugin:ErrorProne</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>
+            <arg>--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED</arg>
           </compilerArgs>
           <annotationProcessorPaths>
             <path>
@@ -248,29 +249,4 @@
       </plugin>
     </plugins>
   </build>
-
-  <profiles>
-    <!-- using github.com/google/error-prone-javac is required when running on JDK 8 -->
-    <profile>
-      <id>jdk8</id>
-      <activation>
-        <jdk>1.8</jdk>
-      </activation>
-      <build>
-        <plugins>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-compiler-plugin</artifactId>
-            <configuration>
-              <fork>true</fork>
-              <compilerArgs combine.children="append">
-                <arg>-J-Xbootclasspath/p:${settings.localRepository}/com/google/errorprone/javac/${javac.version}/javac-${javac.version}.jar</arg>
-              </compilerArgs>
-            </configuration>
-          </plugin>
-        </plugins>
-      </build>
-    </profile>
-  </profiles>
-
 </project>