diff --git a/doc/release-checklist.rst b/doc/release-checklist.rst
index 90a6b09000..341d9c3107 100644
--- a/doc/release-checklist.rst
+++ b/doc/release-checklist.rst
@@ -240,6 +240,9 @@ Checklist for ordinary releases
   - Trivial compile test for separate sources (important because
     it's easy to forget to add files in make_dist.sh)
 
+  - Test Makefile.dukdebug + debugger/duk_debug.js to ensure all files
+    are included (easy to forget e.g. YAML metadata files)
+
 * Store binaries to duktape-releases repo
 
   - Add the tar.xz to the master branch
diff --git a/util/make_dist.sh b/util/make_dist.sh
index d557c532e9..a26ec1477c 100644
--- a/util/make_dist.sh
+++ b/util/make_dist.sh
@@ -202,6 +202,9 @@ for i in \
 	Makefile \
 	package.json \
 	duk_debug.js \
+	duk_classnames.yaml \
+	duk_debugcommands.yaml \
+	duk_opcodes.yaml \
 	; do
 	cp debugger/$i $DIST/debugger/
 done