diff --git a/.changeset/fix-integration-ci-affected.md b/.changeset/fix-integration-ci-affected.md
new file mode 100644
index 00000000000..a845151cc84
--- /dev/null
+++ b/.changeset/fix-integration-ci-affected.md
@@ -0,0 +1,2 @@
+---
+---
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da6b80dcfed..7fa3228c511 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -356,8 +356,7 @@ jobs:
           fi
           jq --version
 
-      - name: Task Status
-        id: task-status
+      - name: Validate turbo task
         env:
           E2E_APP_CLERK_JS_DIR: ${{runner.temp}}
           E2E_APP_CLERK_UI_DIR: ${{runner.temp}}
@@ -367,32 +366,41 @@ jobs:
           E2E_PROJECT: ${{ matrix.test-project }}
           INTEGRATION_INSTANCE_KEYS: ${{ secrets.INTEGRATION_INSTANCE_KEYS }}
         run: |
-          # Use turbo's built-in --affected flag to detect changes
-          # This automatically uses GITHUB_BASE_REF in GitHub Actions
-          TASK_COUNT=$(pnpm turbo run test:integration:${{ matrix.test-name }} --affected --dry=json 2>/dev/null | jq '.tasks | length' 2>/dev/null || echo "0")
+          # Validate the turbo task exists. Turbo's --affected flag is a no-op for
+          # root-level tasks (//#) — they are always returned as affected. The previous
+          # --affected check only served to silently skip tests when the task was missing
+          # from turbo.json, hiding real configuration errors.
+          TASK_NAME="test:integration:${{ matrix.test-name }}"
+          TURBO_STDERR=$(mktemp)
+          if ! TURBO_JSON=$(pnpm turbo run "$TASK_NAME" --dry=json 2>"$TURBO_STDERR"); then
+            echo "::error::Turbo task '$TASK_NAME' failed validation"
+            cat "$TURBO_STDERR"
+            exit 1
+          fi
 
-          if [ "$TASK_COUNT" -gt 0 ]; then
-            AFFECTED=1
-          else
-            AFFECTED=0
+          if ! TASK_COUNT=$(jq -er '.tasks | length' <<< "$TURBO_JSON"); then
+            echo "::error::Turbo task '$TASK_NAME' returned invalid JSON or missing .tasks"
+            printf '%s\n' "$TURBO_JSON"
+            exit 1
+          fi
+
+          if [ "$TASK_COUNT" -eq 0 ]; then
+            echo "::error::Turbo task '$TASK_NAME' returned 0 tasks"
+            exit 1
           fi
 
-          echo "affected=${AFFECTED}"
-          echo "affected=${AFFECTED}" >> $GITHUB_OUTPUT
+          echo "Task '$TASK_NAME' validated ($TASK_COUNT tasks in graph)"
 
       - name: Build packages
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         run: pnpm turbo build $TURBO_ARGS --only
 
       - name: Publish to local registry
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         run: pkglab pub --force
 
       - name: Edit .npmrc [link-workspace-packages=false]
         run: sed -i -E 's/link-workspace-packages=(deep|true)/link-workspace-packages=false/' .npmrc
 
       - name: Install @clerk/clerk-js in os temp
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         working-directory: ${{runner.temp}}
         run: |
           mkdir clerk-js && cd clerk-js
@@ -400,7 +408,6 @@ jobs:
           pkglab add @clerk/clerk-js
 
       - name: Install @clerk/ui in os temp
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         working-directory: ${{runner.temp}}
         run: |
           mkdir clerk-ui && cd clerk-ui
@@ -412,7 +419,6 @@ jobs:
         run: cd packages/astro && pnpm copy:components
 
       - name: Write all ENV certificates to files in integration/certs
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         uses: actions/github-script@v7
         env:
           INTEGRATION_CERTS: "${{secrets.INTEGRATION_CERTS}}"
@@ -430,12 +436,10 @@ jobs:
             }
 
       - name: LS certs
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         working-directory: ./integration/certs
         run: ls -la && pwd
 
       - name: Run Integration Tests
-        if: ${{ steps.task-status.outputs.affected == '1' }}
         id: integration-tests
         timeout-minutes: 25
         run: pnpm turbo test:integration:${{ matrix.test-name }} $TURBO_ARGS
diff --git a/turbo.json b/turbo.json
index 9378cc8b73b..756bb2032c0 100644
--- a/turbo.json
+++ b/turbo.json
@@ -216,6 +216,11 @@
       "inputs": ["integration/**"],
       "outputLogs": "new-only"
     },
+    "//#test:integration:fastify": {
+      "env": ["CLEANUP", "DEBUG", "E2E_*", "INTEGRATION_INSTANCE_KEYS"],
+      "inputs": ["integration/**"],
+      "outputLogs": "new-only"
+    },
     "//#test:integration:hono": {
       "env": ["CLEANUP", "DEBUG", "E2E_*", "INTEGRATION_INSTANCE_KEYS"],
       "inputs": ["integration/**"],