diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a1ee17a28..382f7e03e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Setup Java 21
       uses: actions/setup-java@v4.6.0
@@ -31,13 +31,13 @@ jobs:
         fi
         export GITHUB_BUILD=$(echo $GITHUB_RELEASE | jq --raw-output '.name')
         export GITHUB_URL=$(echo $GITHUB_RELEASE | jq --raw-output '.assets[] | select(.browser_download_url | contains(".jar")).browser_download_url')
-        echo "::set-output name=github::$GITHUB_URL"
+        echo "github=$GITHUB_URL" >> $GITHUB_OUTPUT
         echo "GitHub URL = ${GITHUB_URL}"
-        echo "::set-output name=build::$GITHUB_BUILD"
+        echo "build=$GITHUB_BUILD" >> $GITHUB_OUTPUT
         echo "GitHub Mafia Build = ${GITHUB_BUILD}"
     - name: Cache KoLmafia
       id: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: .github/kolmafia.jar
         key: kolmafia-${{steps.mafia.outputs.build}}