diff --git a/.baseline/checkstyle/checkstyle.xml b/.baseline/checkstyle/checkstyle.xml
index 1a086c49..fd1fa389 100644
--- a/.baseline/checkstyle/checkstyle.xml
+++ b/.baseline/checkstyle/checkstyle.xml
@@ -43,7 +43,7 @@
     </module>
     <module name="LineLength"> <!-- Java Style Guide: No line-wrapping -->
         <property name="max" value="120"/>
-        <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
+        <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://|\{@link"/>
     </module>
     <module name="TreeWalker">
         <module name="SuppressionCommentFilter"/> <!-- baseline-gradle: README.md -->
@@ -402,7 +402,9 @@
             <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
             <property name="target" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
         </module>
-        <module name="CyclomaticComplexity"/> <!-- Java Coding Guidelines: Reduce Cyclomatic Complexity -->
+        <module name="CyclomaticComplexity"> <!-- Java Coding Guidelines: Reduce Cyclomatic Complexity -->
+            <property name="switchBlockAsSingleDecisionPoint" value="true"/>
+        </module>
         <module name="DesignForExtension"> <!-- Java Coding Guidelines: Design for extension -->
             <property name="ignoredAnnotations" value="ParameterizedTest, Test, Before, BeforeEach, After, AfterEach, BeforeClass, BeforeAll, AfterClass, AfterAll"/>
         </module>
diff --git a/.baseline/idea/intellij-java-palantir-style.xml b/.baseline/idea/intellij-java-palantir-style.xml
index f41e2b8a..6a5f83a6 100644
--- a/.baseline/idea/intellij-java-palantir-style.xml
+++ b/.baseline/idea/intellij-java-palantir-style.xml
@@ -44,8 +44,10 @@
               <package name="" withSubpackages="true" static="false" />
             </value>
           </option>
+          <!-- Should be a superset of https://github.com/google/error-prone/blob/c481b3f9c2da112db36ccfcbf64e755261a127ab/core/src/main/java/com/google/errorprone/bugpatterns/BadImport.java#L63 -->
           <DO_NOT_IMPORT_INNER>
             <CLASS name="Builder" />
+            <CLASS name="BuilderFactory" />
             <CLASS name="Callback" />
             <CLASS name="Class" />
             <CLASS name="Entry" />
@@ -54,6 +56,7 @@
             <CLASS name="Type" />
             <CLASS name="Key" />
             <CLASS name="Id" />
+            <CLASS name="Identifier" />
             <CLASS name="Provider" />
           </DO_NOT_IMPORT_INNER>
         </GroovyCodeStyleSettings>
diff --git a/build.gradle b/build.gradle
index d5d834a6..0d8be493 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ buildscript {
         classpath 'com.palantir.gradle.jdkslatest:gradle-jdks-latest:0.11.0'
         classpath 'com.palantir.gradle.externalpublish:gradle-external-publish-plugin:1.12.0'
         classpath 'com.palantir.javaformat:gradle-palantir-java-format:2.38.0'
-        classpath 'com.palantir.baseline:gradle-baseline-java:4.59.0'
+        classpath 'com.palantir.baseline:gradle-baseline-java:5.21.0'
         classpath 'com.palantir.gradle.consistentversions:gradle-consistent-versions:2.15.0'
         classpath 'com.palantir.gradle.gitversion:gradle-git-version:3.0.0'
         classpath 'gradle.plugin.org.inferred:gradle-processors:3.7.0'
diff --git a/conjure-postman-core/src/main/java/com/palantir/conjure/postman/api/PostmanAuth.java b/conjure-postman-core/src/main/java/com/palantir/conjure/postman/api/PostmanAuth.java
index dc211070..512f0471 100644
--- a/conjure-postman-core/src/main/java/com/palantir/conjure/postman/api/PostmanAuth.java
+++ b/conjure-postman-core/src/main/java/com/palantir/conjure/postman/api/PostmanAuth.java
@@ -46,7 +46,7 @@ default Optional<List<Map<String, String>>> bearer() {
                 .put("key", "token")
                 .put("value", AUTH_VARIABLE)
                 .put("type", "string")
-                .build()));
+                .buildOrThrow()));
     }
 
     static Builder builder() {
diff --git a/versions.props b/versions.props
index 45fba579..8aed093f 100644
--- a/versions.props
+++ b/versions.props
@@ -19,6 +19,4 @@ org.assertj:* = 3.23.1
 org.hamcrest:hamcrest-core = 2.2
 org.immutables:* = 2.8.8
 org.javassist:javassist = 3.22.0-GA
-org.mockito:mockito-core = 4.8.0
 org.slf4j:* = 1.7.36
-org.objenesis:objenesis = 3.3