diff --git a/.github/workflows/ubuntu18.yml b/.github/workflows/ubuntu18.yml
index ab292b6..a029f30 100644
--- a/.github/workflows/ubuntu18.yml
+++ b/.github/workflows/ubuntu18.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Setup cmake
         uses: jwlawson/actions-setup-cmake@v1.4
         with:
-          cmake-version: '3.9.x'
+          cmake-version: '3.11.x'
       - name: Install older compilers
         run: |
           sudo -E dpkg --add-architecture i386
diff --git a/.github/workflows/ubuntu20.yml b/.github/workflows/ubuntu20.yml
index 6b8c634..f026366 100644
--- a/.github/workflows/ubuntu20.yml
+++ b/.github/workflows/ubuntu20.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Setup cmake
         uses: jwlawson/actions-setup-cmake@v1.4
         with:
-          cmake-version: '3.9.x'
+          cmake-version: '3.11.x'
       - name: install older compilers
         run: |
           sudo -E dpkg --add-architecture i386