diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 136f97a..b97fce5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,7 +46,7 @@ jobs:
           git submodule update --init
       - name: Install dependencies
         run: |
-          gem install --no-document toys
+          gem install --no-document toys -v '~> 0.22.0'
       - name: Run CI
         env:
           GITHUB_EVENT_NAME: ${{ github.event_name }}
diff --git a/.github/workflows/new-gem.yml b/.github/workflows/new-gem.yml
index 6c6db9a..864a834 100644
--- a/.github/workflows/new-gem.yml
+++ b/.github/workflows/new-gem.yml
@@ -29,7 +29,7 @@ jobs:
         with:
           ruby-version: "3.4"
       - name: Install tools
-        run: "gem install --no-document toys grpc-tools:1.62.0"
+        run: "gem install --no-document 'toys:~> 0.22.0' grpc-tools:1.62.0"
       - name: execute
         run: |
           toys new-gem -v --fork ${GITHUB_EVENT_INPUTS_PROTOPATH} ${GITHUB_EVENT_INPUTS_ARGS}
diff --git a/.github/workflows/update-gems.yml b/.github/workflows/update-gems.yml
index b51a4c5..6bc947b 100644
--- a/.github/workflows/update-gems.yml
+++ b/.github/workflows/update-gems.yml
@@ -28,7 +28,7 @@ jobs:
         with:
           ruby-version: "3.4"
       - name: Install tools
-        run: "gem install --no-document toys grpc-tools:1.62.0"
+        run: "gem install --no-document 'toys:~> 0.22.0' grpc-tools:1.62.0"
       - name: execute
         run: |
           toys update-gems-pr -v --fork ${GITHUB_EVENT_INPUTS_ARGS}