diff --git a/.github/workflows/e2e.yaml b/.github/workflows/e2e.yaml
index 571ab2ee9..4d80fbc41 100644
--- a/.github/workflows/e2e.yaml
+++ b/.github/workflows/e2e.yaml
@@ -52,8 +52,8 @@ jobs:
         export PLATFORM=$(go env GOOS)/$(go env GOARCH)
 
         if [[ "${{ matrix.platform }}" == "windows-latest" ]]; then
-          OSVERSION="10.0.20348"
-          PLATFORM=${PLATFORM}:${OSVERSION}
+          export OSVERSION="10.0.20348"
+          export PLATFORM=${PLATFORM}:${OSVERSION}
           export KO_DEFAULTBASEIMAGE=mcr.microsoft.com/windows/nanoserver:ltsc2022
         else
           # Explicitly test multiple platform builds (a subset of what's in the base!)