diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6238a519..84235eb0 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -69,7 +69,7 @@ jobs:
       - name: "[preparation] set the container image tag"
         run: |
           if [ "${GITHUB_EVENT_NAME}" == "pull_request" ]; then
-            CONTAINER_IMAGE_TAG="pr${{ github.event.number }}"
+            CONTAINER_IMAGE_TAG="2.20.0-beta.1"
           else
             CONTAINER_IMAGE_TAG=$(echo $GITHUB_REF_NAME | sed 's/\//-/g')
           fi
@@ -115,7 +115,7 @@ jobs:
       - name: "[execution] build and push manifests"
         run: |
           if [ "${GITHUB_EVENT_NAME}" == "pull_request" ]; then
-            CONTAINER_IMAGE_TAG="pr${{ github.event.number }}"
+            CONTAINER_IMAGE_TAG="2.20.0-beta.1"
           else
             CONTAINER_IMAGE_TAG=$(echo $GITHUB_REF_NAME | sed 's/\//-/g')
           fi
diff --git a/agent.go b/agent.go
index 40afe7ef..910f6b12 100644
--- a/agent.go
+++ b/agent.go
@@ -260,7 +260,7 @@ type (
 
 var (
 	// Version represents the version of the agent.
-	Version = "2.20.0"
+	Version = "2.20.0-beta.1"
 )
 
 const (