diff --git a/README.md b/README.md
index 1447610..f76e694 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ jobs:
         run: |
           docker build -t docker.io/my-organization/my-app:${{ github.sha }} .
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
           format: 'table'
@@ -67,7 +67,7 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Run Trivy vulnerability scanner in fs mode
-      uses: aquasecurity/trivy-action@master
+      uses: aquasecurity/trivy-action@0.20.0
       with:
         scan-type: 'fs'
         scan-ref: '.'
@@ -117,7 +117,7 @@ jobs:
         docker save -o vuln-image.tar <your-docker-image>
 
     - name: Run Trivy vulnerability scanner in tarball mode
-      uses: aquasecurity/trivy-action@master
+      uses: aquasecurity/trivy-action@0.20.0
       with:
         input: /github/workspace/vuln-image.tar
         severity: 'CRITICAL,HIGH'
@@ -145,7 +145,7 @@ jobs:
           docker build -t docker.io/my-organization/my-app:${{ github.sha }} .
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
           format: 'sarif'
@@ -180,7 +180,7 @@ jobs:
           docker build -t docker.io/my-organization/my-app:${{ github.sha }} .
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
           format: 'sarif'
@@ -215,7 +215,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner in repo mode
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           scan-type: 'fs'
           ignore-unfixed: true
@@ -249,7 +249,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner with rootfs command
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           scan-type: 'rootfs'
           scan-ref: 'rootfs-example-binary'
@@ -284,7 +284,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner in IaC mode
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           scan-type: 'config'
           hide-progress: true
@@ -328,7 +328,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy in GitHub SBOM mode and submit results to Dependency Graph
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           scan-type: 'fs'
           format: 'github'
@@ -359,7 +359,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Scan image in a private registry
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: "private_image_registry/image_name:image_tag"
           scan-type: image
@@ -402,7 +402,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
           format: 'sarif'
@@ -438,7 +438,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'aws_account_id.dkr.ecr.region.amazonaws.com/imageName:${{ github.sha }}'
           format: 'sarif'
@@ -474,7 +474,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
           format: 'sarif'
@@ -507,7 +507,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.20.0
         with:
           image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
           format: 'sarif'
@@ -530,7 +530,7 @@ This step is especially useful for private repositories without [GitHub Advanced
 
 ```yaml
 - name: Run Trivy scanner
-  uses: aquasecurity/trivy-action@master
+  uses: aquasecurity/trivy-action@0.20.0
   with:
     scan-type: config
     hide-progress: true