diff --git a/.github/workflows/compile.yml b/.github/workflows/compile.yml
index 05e9394..f4d9f80 100644
--- a/.github/workflows/compile.yml
+++ b/.github/workflows/compile.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        zig_version: [0.11.0, 0.12.0]
+        zig_version: [0.13.0, 0.12.0, 0.11.0]
 
     runs-on: ubuntu-latest
 
diff --git a/build.zig b/build.zig
index a265025..b090d66 100644
--- a/build.zig
+++ b/build.zig
@@ -53,8 +53,13 @@ pub fn build(b: *Build) !void {
         });
 
         if (comptime @hasDecl(@TypeOf(cross_tar.*), "setCwd")) {
-            // Zig 0.12.0
-            cross_tar.setCwd(b.path("./zig-out/bin/"));
+            if (comptime @hasDecl(Build, "path")) {
+                // Zig 0.13.0
+                cross_tar.setCwd(b.path("./zig-out/bin/"));
+            } else {
+                // Zig 0.12.0
+                cross_tar.setCwd(.{ .path = "./zig-out/bin/" });
+            }
         } else {
             // Zig 0.11
             cross_tar.cwd = "./zig-out/bin/";
diff --git a/src/builtins.zig b/src/builtins.zig
index 0f841c7..1f4a401 100644
--- a/src/builtins.zig
+++ b/src/builtins.zig
@@ -333,7 +333,14 @@ pub fn writef(dt: *DtMachine) !void {
     const theCwdPath = try std.process.getCwdAlloc(dt.alloc);
     var theCwd = try std.fs.openDirAbsolute(theCwdPath, .{});
 
-    try theCwd.writeFile(.{ .data = contents, .sub_path = filename });
+    const Dir = std.fs.Dir;
+    if (comptime @hasDecl(Dir, "WriteFileOptions") and @typeInfo(@TypeOf(Dir.writeFile)).Fn.params[1].type == Dir.WriteFileOptions) {
+        // Zig 0.13
+        try theCwd.writeFile(.{ .data = contents, .sub_path = filename });
+    } else {
+        // Zig 0.12, 0.11
+        try theCwd.writeFile(filename, contents);
+    }
     theCwd.close();
 }