diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 5166517cbe..4a938e50ab 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -67,8 +67,8 @@ jobs:
         rm -rf /opt/hostedtoolcache/{node,go,Ruby,Java*}
         ls -al /opt/hostedtoolcache
         rm -rf /usr/share/dotnet/
-        python -m pip install -U pip wheel
-        python -m pip install -r requirements-dev.txt
+        python -m pip install -U --no-build-isolation pip wheel wheel-stub
+        python -m pip install --no-build-isolation -r requirements-dev.txt
         BUILD_MONAI=1 ./runtests.sh --build
 
     - name: Perform CodeQL Analysis
diff --git a/.github/workflows/pythonapp-gpu.yml b/.github/workflows/pythonapp-gpu.yml
index 4a7069e7f9..f851966e01 100644
--- a/.github/workflows/pythonapp-gpu.yml
+++ b/.github/workflows/pythonapp-gpu.yml
@@ -1,7 +1,7 @@
 # Jenkinsfile.monai-premerge
 name: premerge-gpu
 
-# on:
+on:
 #   # quick tests for pull requests and the releasing branches
 #   push:
 #     branches:
@@ -9,6 +9,8 @@ name: premerge-gpu
 #       - releasing/*
 #   pull_request:
 #     types: [opened, synchronize, closed]
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
 
 concurrency:
   # automatically cancel the previously triggered workflows when there's a newer version