diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4efca7e..f7cbcdc 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,5 +1,10 @@
 name: CI
-on: [push, pull_request]
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master, develop ]
+  workflow_dispatch:
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -11,7 +16,7 @@ jobs:
         architecture: 'x64'
     - name: Install the library
       run: |
-        pip install nbdev jupyter
+        pip install nbdev==1.2.5 jupyter
         pip install -e .
     - name: Read all notebooks
       run: |
diff --git a/.github/workflows/publish_and_release.yml b/.github/workflows/publish_and_release.yml
index 20316e1..cc67ad3 100644
--- a/.github/workflows/publish_and_release.yml
+++ b/.github/workflows/publish_and_release.yml
@@ -1,6 +1,4 @@
 on:
-  push:
-    branches: [ master ]
   workflow_dispatch: