diff --git a/.github/workflows/e2e_tests.yml b/.github/workflows/e2e_tests.yml
index cab4c31..7247ec8 100644
--- a/.github/workflows/e2e_tests.yml
+++ b/.github/workflows/e2e_tests.yml
@@ -25,6 +25,10 @@ on:
         description: 'The mnemonic phrase for the account to use in testing'
         required: false
         type: string
+      a3p_image_tag:
+        description: 'Docker image tag for the a3p chain to use in testing'
+        required: false
+        type: string
 
 concurrency:
   group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label ||
@@ -53,6 +57,7 @@ jobs:
           SYNPRESS_PROFILE: ${{ env.NETWORK != 'local' && 'daily-tests' || 'synpress' }}
           CYPRESS_AGORIC_NET: ${{ env.NETWORK }}
           # for docker-compose.yml
+          A3P_IMAGE_TAG: ${{ inputs.a3p_image_tag  || 'latest'}}
           COMPOSE_DOCKER_CLI_BUILD: 1
           DOCKER_BUILDKIT: 1
           DOCKER_DEFAULT_PLATFORM: linux/amd64
diff --git a/README.md b/README.md
index 3f0273b..a23d249 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ To deploy, push to that branch. e.g. if you've qualified main,
 git push origin main:beta
 ```
 
-## Testing
+## E2E Testing
 
 E2E tests have been written in order to test the dapp as well as to perform automated testing on emerynet/devnet when upgrading the chain
 
diff --git a/tests/e2e/docker-compose.yml b/tests/e2e/docker-compose.yml
index a819f43..96b5811 100644
--- a/tests/e2e/docker-compose.yml
+++ b/tests/e2e/docker-compose.yml
@@ -104,7 +104,7 @@ services:
     profiles:
       - synpress
     container_name: agoric_chain
-    image: ghcr.io/agoric/agoric-3-proposals:latest
+    image: ghcr.io/agoric/agoric-3-proposals:${A3P_IMAGE_TAG}
     logging:
       driver: none
     platform: linux/amd64