diff --git a/.github/workflows/Linux.yaml b/.github/workflows/Linux.yaml
index 5a76fa98..58709ee3 100644
--- a/.github/workflows/Linux.yaml
+++ b/.github/workflows/Linux.yaml
@@ -3,9 +3,10 @@ name: Linux
 
 on:
   push:
-    branches: [master]
-  pull_request: 
-    branches: [master]
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
 
 jobs:
   build-test-install:
diff --git a/.github/workflows/MacOS.yaml b/.github/workflows/MacOS.yaml
index fd605b3b..55bd03e0 100644
--- a/.github/workflows/MacOS.yaml
+++ b/.github/workflows/MacOS.yaml
@@ -3,16 +3,17 @@ name: MacOS
 
 on:
   push:
-    branches: [master]
-  pull_request: 
-    branches: [master]
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
 
 jobs:
   build-test-install:
     strategy: 
       fail-fast: false
       matrix:
-        os: [macos-11, macos-latest]
+        os: [macos-latest]
         build_type: [serial, openmp, debug]
         include:
           - build_type: serial
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb557358..4430ef81 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -129,6 +129,7 @@ if(NOT TARGET ptscotch)
         Scotch
         GIT_REPOSITORY https://gitlab.inria.fr/scotch/scotch.git
         GIT_TAG        v7.0.4
+        GIT_SHALLOW    TRUE
         PATCH_COMMAND  ${CMAKE_COMMAND} -DFileToPatch=CMakeLists.txt -P "${PROJECT_SOURCE_DIR}/cmake/PatchScotch.cmake"
     )
     FetchContent_MakeAvailable(Scotch)