diff --git a/.github/workflows/linux_and_macos.yml b/.github/workflows/linux_and_macos.yml
index c5131fa5..8425db85 100644
--- a/.github/workflows/linux_and_macos.yml
+++ b/.github/workflows/linux_and_macos.yml
@@ -21,7 +21,7 @@ env:
 jobs:
   Run-on-Ubuntu:
     name: test-compile on Ubuntu
-    runs-on: [ubuntu-20.04]
+    runs-on: [ubuntu-22.04]
     steps:
     - uses: actions/checkout@v2
     - name: build
@@ -41,7 +41,7 @@ jobs:
 
   Run-on-Mac:
     name: test-compile on Mac
-    runs-on: [macos-latest]
+    runs-on: [macos-14]
     steps:
     - uses: actions/checkout@v2
     - name: build
@@ -50,7 +50,7 @@ jobs:
         brew info open-mpi
         brew install gfortran
 
-        a=`which gfortran-11`; \
+        a=`which gfortran-14`; \
         b=`dirname $a`; \
         c=$b/gfortran; \
         ln -s $a $c