diff --git a/.github/workflows/integration-test.yaml b/.github/workflows/integration-test.yaml
index 123496873..9c4997522 100644
--- a/.github/workflows/integration-test.yaml
+++ b/.github/workflows/integration-test.yaml
@@ -67,6 +67,13 @@ jobs:
       PARSEABLE_TEST_IMAGE: parseable-ci:${{ github.sha }}
       COMPOSE_FILE: ${{ matrix.compose }}
       QUEST_MODE: ${{ inputs.full && 'load' || 'smoke' }}
+      # Quest is built from a fixed source commit instead of pulling the
+      # floating quay.io/parseablehq/quest:main image. Later Quest commits
+      # expect 202 from stream deletion, which this server does not return yet.
+      # Remove the pin when issue #151 is done.
+      QUEST_SOURCE_REF: f4a026eecde1badde8776ff366a743f9bbca2e67
+      QUEST_IMAGE: quest-ci:pinned
+      QUEST_PULL_POLICY: never
     steps:
       - uses: actions/checkout@v4
       - uses: actions/download-artifact@v4
@@ -84,6 +91,14 @@ jobs:
         run: |
           docker compose up --no-build --wait --wait-timeout 180 "$SERVER"
           docker compose exec -T "$SERVER" sh -ec 'curl --fail --silent --show-error --location http://localhost:8000/next/ | grep -q "Parseable · Observability"'
+      - name: Build Quest from the pinned source commit
+        run: |
+          src="$RUNNER_TEMP/quest-src"
+          git init --quiet "$src"
+          git -C "$src" fetch --quiet --depth 1 https://github.com/parseablehq/quest.git "$QUEST_SOURCE_REF"
+          git -C "$src" checkout --quiet FETCH_HEAD
+          test "$(git -C "$src" rev-parse HEAD)" = "$QUEST_SOURCE_REF"
+          docker build --tag "$QUEST_IMAGE" "$src"
       - name: Run Quest
         run: docker compose up --no-build --exit-code-from quest
       - name: Capture service logs
diff --git a/docker-compose-distributed-test-with-kafka.yaml b/docker-compose-distributed-test-with-kafka.yaml
index f173e22b0..1e22cf39c 100644
--- a/docker-compose-distributed-test-with-kafka.yaml
+++ b/docker-compose-distributed-test-with-kafka.yaml
@@ -194,8 +194,8 @@ services:
 
   quest:
     platform: linux/amd64
-    image: quay.io/parseablehq/quest:main
-    pull_policy: always
+    image: ${QUEST_IMAGE:-quay.io/parseablehq/quest:main}
+    pull_policy: ${QUEST_PULL_POLICY:-always}
     command:
       [
         "load",
diff --git a/docker-compose-distributed-test.yaml b/docker-compose-distributed-test.yaml
index b46810649..c3bcdfc4a 100644
--- a/docker-compose-distributed-test.yaml
+++ b/docker-compose-distributed-test.yaml
@@ -109,8 +109,8 @@ services:
   
   quest:
     platform: linux/amd64
-    image: quay.io/parseablehq/quest:main
-    pull_policy: always
+    image: ${QUEST_IMAGE:-quay.io/parseablehq/quest:main}
+    pull_policy: ${QUEST_PULL_POLICY:-always}
     environment:
       - QUEST_EDITION=oss
     command:
diff --git a/docker-compose-gcs-distributed-test.yaml b/docker-compose-gcs-distributed-test.yaml
index a90e53e2f..66bf18f69 100644
--- a/docker-compose-gcs-distributed-test.yaml
+++ b/docker-compose-gcs-distributed-test.yaml
@@ -79,8 +79,8 @@ services:
 
   quest:
     platform: linux/amd64
-    image: quay.io/parseablehq/quest:main
-    pull_policy: always
+    image: ${QUEST_IMAGE:-quay.io/parseablehq/quest:main}
+    pull_policy: ${QUEST_PULL_POLICY:-always}
     command:
       [
         "load",
diff --git a/docker-compose-test-with-kafka.yaml b/docker-compose-test-with-kafka.yaml
index ff8f09f2e..79d337e59 100644
--- a/docker-compose-test-with-kafka.yaml
+++ b/docker-compose-test-with-kafka.yaml
@@ -68,9 +68,9 @@ services:
         max_attempts: 3
 
   quest:
-    image: quay.io/parseablehq/quest:main
+    image: ${QUEST_IMAGE:-quay.io/parseablehq/quest:main}
     platform: linux/amd64
-    pull_policy: always
+    pull_policy: ${QUEST_PULL_POLICY:-always}
     command: [
       "load",
       "http://parseable:8000",
diff --git a/docker-compose-test.yaml b/docker-compose-test.yaml
index ddef891fb..5fc46d7aa 100644
--- a/docker-compose-test.yaml
+++ b/docker-compose-test.yaml
@@ -64,9 +64,9 @@ services:
         max_attempts: 3
 
   quest:
-    image: quay.io/parseablehq/quest:main
+    image: ${QUEST_IMAGE:-quay.io/parseablehq/quest:main}
     platform: linux/amd64
-    pull_policy: always
+    pull_policy: ${QUEST_PULL_POLICY:-always}
     environment:
       - QUEST_EDITION=oss
     command: [