diff --git a/.github/workflows/build_viewer.yml b/.github/workflows/build_viewer.yml
index f50c4b8e8a..bcacdc8789 100644
--- a/.github/workflows/build_viewer.yml
+++ b/.github/workflows/build_viewer.yml
@@ -25,7 +25,7 @@ jobs:
   build_matrix:
     strategy:
       matrix:
-        os: [macos-11,ubuntu-20.04,windows-2022]
+        os: [macos-11,ubuntu-22.04,windows-2022]
         grid: [sl,os]
         addrsize: [64]
     runs-on: ${{ matrix.os }}