diff --git a/.github/workflows/conformance.yaml b/.github/workflows/conformance.yaml
index 2f29930ef..c855d0a50 100644
--- a/.github/workflows/conformance.yaml
+++ b/.github/workflows/conformance.yaml
@@ -35,7 +35,7 @@ jobs:
     - uses: actions/setup-node@v3
       with:
         node-version: ${{ matrix.node }}
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: '>=1.20.2'
     - run: chmod +x .kokoro/conformance.sh
diff --git a/package.json b/package.json
index 4043258b4..e2d636d96 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,7 @@
     "@types/pumpify": "^1.4.1",
     "@types/sinon": "^10.0.0",
     "@types/uuid": "^9.0.0",
-    "c8": "^8.0.1",
+    "c8": "^9.0.0",
     "codecov": "^3.6.5",
     "gapic-tools": "^0.1.8",
     "gts": "^5.0.0",