diff --git a/.github/workflows/run_tests_osx.yml b/.github/workflows/run_tests_osx.yml
index f4b034ab72..328e0c8e83 100644
--- a/.github/workflows/run_tests_osx.yml
+++ b/.github/workflows/run_tests_osx.yml
@@ -16,7 +16,7 @@ jobs:
 
   build-deps-osx:
 
-    runs-on: macos-15
+    runs-on: macos-14
 
     strategy:
       matrix:
@@ -52,7 +52,7 @@ jobs:
   nc-autotools-osx:
 
     needs: [ nc-cmake-tests-oneoff-osx-shared, nc-cmake-tests-oneoff-osx-static, nc-ac-tests-oneoff-osx ]
-    runs-on: macos-15
+    runs-on: macos-14
 
     strategy:
       matrix:
@@ -158,7 +158,7 @@ jobs:
   nc-cmake-osx:
 
     needs: [ nc-cmake-tests-oneoff-osx-shared, nc-cmake-tests-oneoff-osx-static, nc-ac-tests-oneoff-osx ]
-    runs-on: macos-15
+    runs-on: macos-14
 
     strategy:
       matrix:
@@ -253,7 +253,7 @@ jobs:
   nc-ac-tests-oneoff-osx:
 
     needs: build-deps-osx
-    runs-on: macos-15
+    runs-on: macos-14
 
     strategy:
       matrix:
@@ -334,7 +334,7 @@ jobs:
   nc-cmake-tests-oneoff-osx-shared:
 
     needs: build-deps-osx
-    runs-on: macos-15
+    runs-on: macos-14
 
     strategy:
       matrix:
@@ -408,7 +408,7 @@ jobs:
   nc-cmake-tests-oneoff-osx-static:
 
     needs: build-deps-osx
-    runs-on: macos-15
+    runs-on: macos-14
 
     strategy:
       matrix: