diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 35e18d9..f0ddc91 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
       group: ${{ github.workflow }}-release-${{ github.ref_name }}
       cancel-in-progress: false
     environment:
-      name: release
+      name: release-ecr
 
     steps:
       # Use a merge queue to avoid `main` commit race conditions.
@@ -39,4 +39,4 @@ jobs:
         run: uv run task build
 
       - name: Release (ECR)
-        run: uv run task release-ecr-no-build
+        run: uv run task release-ecr-no-build {{.ECR_REPOSITORY_URL}}
diff --git a/Taskfile.yml b/Taskfile.yml
index d5fc09d..029d313 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -7,6 +7,8 @@ vars:
   DOCKER_IMAGE_TAG:
     sh: ./scripts/get-version.sh
   DOCKER_IMAGE: "{{.DOCKER_IMAGE_NAME}}:{{.DOCKER_IMAGE_TAG}}"
+  ECR_REPOSITORY_URL:
+    sh: echo $ECR_REPOSITORY_URL
 
 tasks:
   default:
@@ -83,10 +85,10 @@ tasks:
     deps:
       - build
     cmds:
-      - ./scripts/release-ecr.sh
+      - ./scripts/release-ecr.sh {{.ECR_REPOSITORY_URL}}
 
   release-ecr-no-build:
     desc: Release the Docker image to ECR without building it first
     run: once
     cmds:
-      - ./scripts/release-ecr.sh
+      - ./scripts/release-ecr.sh {{.ECR_REPOSITORY_URL}}
diff --git a/scripts/release-ecr.sh b/scripts/release-ecr.sh
index b0b905b..6cee999 100755
--- a/scripts/release-ecr.sh
+++ b/scripts/release-ecr.sh
@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-ECR_REPOSITORY_URL="${1:-$ECR_REPOSITORY_URL}"
+ECR_REPOSITORY_URL="$1"
 
 IMAGE_NAME="$(echo "$ECR_REPOSITORY_URL" | cut -d '/' -f 2)"
 IMAGE_TAG="$(./scripts/get-version.sh)"