diff --git a/.github/workflows/review-app.yml b/.github/workflows/review-app.yml
index 94d6a87..28ceab3 100644
--- a/.github/workflows/review-app.yml
+++ b/.github/workflows/review-app.yml
@@ -1,5 +1,5 @@
 ---
-name: 'review-app'
+name: "review-app"
 
 # yamllint disable-line rule:truthy
 on:
@@ -20,9 +20,9 @@ jobs:
         with:
           # create a review app
           command: review-apps:create
-          git_remote_url: 'ssh://dokku@dokku.com/nginx-buildpack'
+          git_remote_url: "ssh://dokku@dokku.com/nginx-buildpack"
           # specify `--force` as a flag for git pushes
-          git_push_flags: '--force'
+          git_push_flags: "--force"
           # specify a name for the review app
           review_app_name: nginx-buildpack-${{ github.event.pull_request.number }}
           ssh_private_key: ${{ secrets.SSH_PRIVATE_KEY }}
diff --git a/bin/compile b/bin/compile
index 3b83faf..9c0dd4a 100755
--- a/bin/compile
+++ b/bin/compile
@@ -11,7 +11,8 @@ PCRE_VERSION="10.47"
 PCRE_TARBALL="pcre2-${PCRE_VERSION}.tar.gz"
 SIGIL_VERSION="0.10.1"
 SIGIL_TARBALL="gliderlabs-sigil_${SIGIL_VERSION}_linux_amd64.tgz"
-ZLIB_VERSION="1.3"
+# https://github.com/madler/zlib/releases
+ZLIB_VERSION="1.3.1"
 ZLIB_TARBALL="zlib-${ZLIB_VERSION}.tar.gz"
 
 suppress() {