diff --git a/.github/workflows/ci-conan.yml b/.github/workflows/ci-conan.yml
index 80eb4173..bb3f34ba 100644
--- a/.github/workflows/ci-conan.yml
+++ b/.github/workflows/ci-conan.yml
@@ -45,7 +45,7 @@ jobs:
           }
         - {
             name: "Ubuntu GCC 10.1.0",
-            os: ubuntu-latest,
+            os: ubuntu-18.04,
             compiler: { type: GCC, version: 10, cc: "gcc-10", cxx: "g++-10" }
           }
         - {