diff --git a/.changeset/grumpy-dryers-act.md b/.changeset/grumpy-dryers-act.md
new file mode 100644
index 0000000000..caaeac5fa8
--- /dev/null
+++ b/.changeset/grumpy-dryers-act.md
@@ -0,0 +1,5 @@
+---
+'@backstage/repo-tools': patch
+---
+
+Add missing highlight language for the `package-docs` command.
diff --git a/packages/repo-tools/src/commands/package-docs/command.ts b/packages/repo-tools/src/commands/package-docs/command.ts
index d02bcad396..aa5edc7651 100644
--- a/packages/repo-tools/src/commands/package-docs/command.ts
+++ b/packages/repo-tools/src/commands/package-docs/command.ts
@@ -56,6 +56,7 @@ const HIGHLIGHT_LANGUAGES = [
   'diff',
   'js',
   'json',
+  'docker',
 ];
 
 function getExports(packageJson: any) {