diff --git a/.github/workflows/debug.yml b/.github/workflows/debug.yml
index e559b1b..c176df3 100644
--- a/.github/workflows/debug.yml
+++ b/.github/workflows/debug.yml
@@ -47,7 +47,7 @@ jobs:
         run: |
           sudo apt install emacs
       - name: Setup tmate session
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 19a54d2..36b300c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -70,7 +70,7 @@ jobs:
           sudo apt install emacs
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index abf64e2..aca37c1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -133,7 +133,7 @@ jobs:
         sudo apt install emacs
     - name: Setup tmate session
       if: ${{ github.event.inputs.debug == 'true' }}
-      uses: mxschmitt/action-tmate@v3.19
+      uses: mxschmitt/action-tmate@v3.21
       with:
         detached: true
       timeout-minutes: 60
@@ -196,7 +196,7 @@ jobs:
           sudo apt install emacs
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
@@ -284,7 +284,7 @@ jobs:
           sudo apt install emacs
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
@@ -389,7 +389,7 @@ jobs:
           sudo apt install emacs
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
@@ -490,7 +490,7 @@ jobs:
           sudo apt install emacs
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
@@ -571,7 +571,7 @@ jobs:
         uses: rhysd/action-setup-vim@v1
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60
@@ -633,7 +633,7 @@ jobs:
           brew install emacs
       - name: Setup tmate session
         if: ${{ github.event.inputs.debug == 'true' }}
-        uses: mxschmitt/action-tmate@v3.19
+        uses: mxschmitt/action-tmate@v3.21
         with:
           detached: true
         timeout-minutes: 60