diff --git a/.github/workflows/build-crates-individually.yml b/.github/workflows/build-crates-individually.yml
index 4aaf315f..8fcd0581 100644
--- a/.github/workflows/build-crates-individually.yml
+++ b/.github/workflows/build-crates-individually.yml
@@ -111,9 +111,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: actions-rs/toolchain@v1
diff --git a/.github/workflows/continous-integration-os.yml b/.github/workflows/continous-integration-os.yml
index beda0488..366cb04b 100644
--- a/.github/workflows/continous-integration-os.yml
+++ b/.github/workflows/continous-integration-os.yml
@@ -82,9 +82,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: actions-rs/toolchain@v1
@@ -224,9 +225,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: actions-rs/toolchain@v1
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 07ea9d68..6caa4803 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -42,9 +42,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install latest beta
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d0ac7aa7..4763bf52 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -67,9 +67,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Check workflow permissions
@@ -117,9 +118,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: actions-rs/toolchain@v1.0.6
@@ -157,9 +159,10 @@ jobs:
           persist-credentials: false
 
       - name: Install last version of Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v1.1.2
         with:
-          version: '3.x'
+          # TODO: increase to latest version after https://github.com/arduino/setup-protoc/issues/33 is fixed
+          version: '3.20.1'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: actions-rs/toolchain@v1.0.6