diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4f156499..1e928428 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,9 +2,9 @@ name: build
 
 on:
   push:
-    branches: [ unstable ]
+    branches: [ unstable, '[0-9]+.[0-9]+.x' ]
   pull_request:
-    branches: [ unstable ]
+    branches: [ unstable, '[0-9]+.[0-9]+.x' ]
   workflow_call:
   workflow_dispatch:
 
@@ -36,7 +36,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - uses: actions/cache/restore@v3
+    - uses: actions/cache/restore@v4
       with:
         path: ${{ env.CCACHE_DIR }}
         key: ccache-${{ matrix.os }}-${{ matrix.cc }}-${{ github.run_id }}
@@ -135,7 +135,7 @@ jobs:
       if: always()
       run: ccache -sv
 
-    - uses: actions/cache/save@v3
+    - uses: actions/cache/save@v4
       if: always()
       with:
         path: ${{ env.CCACHE_DIR }}
diff --git a/Jenkinsfile b/Jenkinsfile
index fc1f324e..4c69550b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -58,8 +58,8 @@ for (int i = 0; i < dockerPlatforms.size(); i++) {
 
 /****************** osx builds (on host) */
 def osxPlatforms = [
-  ["gcc", ['CC=gcc-13', 'CXX=g++-13', 'FC=gfortran-13']],
-  ["clang", ['CC=$BREW/opt/llvm/bin/clang', 'CXX=$BREW/opt/llvm/bin/clang++', 'FC=gfortran-13', 'CXXFLAGS=-I$BREW/opt/llvm/include', 'LDFLAGS=-L$BREW/opt/llvm/lib']]
+  ["gcc", ['CC=gcc-14', 'CXX=g++-14', 'FC=gfortran-14']],
+  ["clang", ['CC=$BREW/opt/llvm/bin/clang', 'CXX=$BREW/opt/llvm/bin/clang++', 'FC=gfortran-14', 'CXXFLAGS=-I$BREW/opt/llvm/include', 'LDFLAGS=-L$BREW/opt/llvm/lib']]
 ]
 for (int i = 0; i < osxPlatforms.size(); i++) {
   def platformEnv = osxPlatforms[i]
@@ -87,7 +87,7 @@ for (int i = 0; i < osxPlatforms.size(); i++) {
           "CPLUS_INCLUDE_PATH=$venv/include:$hdf5/include:${env.BREW}/include",
           "LIBRARY_PATH=$venv/lib:$hdf5/lib:${env.BREW}/lib",
           "LD_LIBRARY_PATH=$hdf5/lib",
-          "PYTHONPATH=$installDir/lib/python3.9/site-packages",
+          "PYTHONPATH=$installDir/lib/python3.12/site-packages",
           "CMAKE_PREFIX_PATH=$venv/lib/cmake/triqs",
           "VIRTUAL_ENV=$venv",
           "OMP_NUM_THREADS=2"]) {
diff --git a/doc/conf.py.in b/doc/conf.py.in
index 94bb1bf0..941a8863 100644
--- a/doc/conf.py.in
+++ b/doc/conf.py.in
@@ -4,7 +4,6 @@
 
 import sys
 sys.path.insert(0, "@CMAKE_CURRENT_SOURCE_DIR@/sphinxext")
-sys.path.insert(0, "@CMAKE_CURRENT_SOURCE_DIR@/sphinxext/numpydoc")
 
 # exclude these folders from scanning by sphinx
 exclude_patterns = ['_templates']