diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index e7b0a4c..3dd8c21 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -10,7 +10,7 @@ jobs:
   ubuntu:
     runs-on: ${{ matrix.os }}
     env:
-      GODEBUG: cgocheck=2
+      GOEXPERIMENT: cgocheck2
     strategy:
       matrix:
         os: [ 'ubuntu-20.04', 'ubuntu-22.04' ]
@@ -50,7 +50,7 @@ jobs:
     needs: install-gdal
     runs-on: ubuntu-22.04
     env:
-      GODEBUG: cgocheck=2
+      GOEXPERIMENT: cgocheck2
     strategy:
       matrix:
         go: [ '1.20', '1.21' ]