diff --git a/.github/workflows/publish-server.yaml b/.github/workflows/publish-server.yaml
index ff1b14cf..4df7de2e 100644
--- a/.github/workflows/publish-server.yaml
+++ b/.github/workflows/publish-server.yaml
@@ -24,7 +24,7 @@ jobs:
       - name: Install Deno
         uses: denoland/setup-deno@v2
         with:
-          deno-version: v2.x
+          deno-version: 2.5.5
       # run any `bun` or `bunx` command
       - run: bun install
       - run: bun test
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 2b33c124..870e82bc 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -16,7 +16,7 @@ jobs:
       - name: Install Deno
         uses: denoland/setup-deno@v2
         with:
-          deno-version: v2.x
+          deno-version: 2.5.5
       # run any `bun` or `bunx` command
       - run: bun install
       - run: cd server && bun test