diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 192f027153..d1383f6aa5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,9 +21,9 @@ on:
         required: false
         default: 'false'
       versionParent:
-        description: 'Specify Che Parent version here, if *releaseParent is true'
+        description: 'Specify Che Parent version here'
         required: false
-        default: ''
+        default: '7.15.0'
       forceRecreateTags:
         description: 'If true, tags will be overriden and regenerated. Use with caution.'
         required: false
@@ -43,7 +43,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
         with: 
diff --git a/typescript-dto/build.sh b/typescript-dto/build.sh
index 8871bb7128..9d10893651 100755
--- a/typescript-dto/build.sh
+++ b/typescript-dto/build.sh
@@ -24,7 +24,8 @@ docker run -i --rm -v "$HOME/.m2:/root/.m2" \
 set -
 # validate that index.d.ts has kind of valid output
 if ! grep "export namespace" index.d.ts; then
-  echo "Invalid output generated for index.d.ts"
+  echo "Invalid output generated for index.d.ts, printing its content:"
+  cat index.d.ts
   exit 1
 fi