diff --git a/entrypoint.sh b/entrypoint.sh
index 3d5d021..4aed032 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -12,7 +12,9 @@ short_sha() {
     cut -c1-8
 }
 
-echo ::set-env name=GITHUB_REF_SLUG::"$(slug_ref "$GITHUB_REF")"
-echo ::set-env name=GITHUB_HEAD_REF_SLUG::"$(slug_ref "$GITHUB_HEAD_REF")"
-echo ::set-env name=GITHUB_BASE_REF_SLUG::"$(slug_ref "$GITHUB_BASE_REF")"
-echo ::set-env name=GITHUB_SHA_SHORT::"$(short_sha "$GITHUB_SHA")"
+{
+  echo "GITHUB_REF_SLUG=$(slug_ref "$GITHUB_REF")"
+  echo "GITHUB_HEAD_REF_SLUG=$(slug_ref "$GITHUB_HEAD_REF")"
+  echo "GITHUB_BASE_REF_SLUG=$(slug_ref "$GITHUB_BASE_REF")"
+  echo "GITHUB_SHA_SHORT=$(short_sha "$GITHUB_SHA")"
+} >>"$GITHUB_ENV"