diff --git a/.github/workflows/deno-ci.yml b/.github/workflows/deno-ci.yml
index cf145ad..98bbf35 100644
--- a/.github/workflows/deno-ci.yml
+++ b/.github/workflows/deno-ci.yml
@@ -14,8 +14,7 @@ jobs:
     strategy:
       matrix:
         deno-version:
-        - v1.15
-        - v1.16
+        - v1.23
         - canary
       fail-fast: false # run each branch to completion
 
@@ -48,7 +47,7 @@ jobs:
         restore-keys: deno-https/v1-
 
     - name: Check entrypoint
-      run: time deno cache server.ts
+      run: time deno cache --check=all server.ts
 
     - name: Run any tests
       run: time deno test
diff --git a/Dockerfile b/Dockerfile
index 07cd07f..d6e7abc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,10 @@
-FROM denoland/deno:alpine-1.16.4
+FROM denoland/deno:alpine-1.23.3
 RUN apk add --no-cache graphviz
 ADD fonts/ /usr/share/fonts/truetype/
 
 WORKDIR /src
 ADD deps.ts .
-RUN deno cache deps.ts
+RUN deno cache --check=all deps.ts
 ADD . .
-RUN deno cache server.ts
+RUN deno cache --check=all server.ts
 ENTRYPOINT ["deno","run","--allow-env","--allow-net=0.0.0.0,api.github.com,cdn.deno.land,registry.npmjs.org","--allow-run=deno,dot","--allow-read=.","server.ts"]