diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9eb4fed..d795593 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -206,17 +206,18 @@ jobs:
       - name: Verify npm installation
         shell: bash
         run: |
-          mkdir -p "$RUNNER_TEMP/npm"
-          printf '%s\n' '{"private":true,"allowScripts":{"@circlesac/gh2":true}}' > "$RUNNER_TEMP/npm/package.json"
-          for attempt in {1..10}; do
-            if npm install --prefix "$RUNNER_TEMP/npm" "@circlesac/gh2@$VERSION"; then
-              break
+          for attempt in {1..20}; do
+            prefix="$RUNNER_TEMP/npm-$attempt"
+            mkdir -p "$prefix"
+            printf '%s\n' '{"private":true,"allowScripts":{"@circlesac/gh2":true}}' > "$prefix/package.json"
+            if env -u CI npm install --prefix "$prefix" "@circlesac/gh2@$VERSION" \
+              && test "$("$prefix/node_modules/.bin/gh2" --version)" = "$VERSION" \
+              && "$prefix/node_modules/.bin/gh2" doctor --help >/dev/null; then
+              exit 0
             fi
-            test "$attempt" -lt 10
+            test "$attempt" -lt 20
             sleep 15
           done
-          test "$("$RUNNER_TEMP/npm/node_modules/.bin/gh2" --version)" = "$VERSION"
-          "$RUNNER_TEMP/npm/node_modules/.bin/gh2" doctor --help >/dev/null
 
       - name: Verify standalone installation
         shell: bash