diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 76d4b43843..fc234db19e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -90,7 +90,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ['ubuntu-latest']
+        os: ['ubuntu-20.04']
         python-version: [3.7, 3.8, 3.9, "3.10"]
         check: ['test']
         pip-flags: ['']
@@ -98,7 +98,7 @@ jobs:
         deb-depends: [false]
         nipype-extras: ['doc,tests,profiler']
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             python-version: 3.8
             check: test
             pip-flags: ''