diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 38e595aa022..3a654181b1b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -71,6 +71,7 @@ jobs:
         uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
 
       - name: Setup Node
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
@@ -110,9 +111,16 @@ jobs:
 
       - name: Run unit tests
         timeout-minutes: 20
-        run: GITHUB_ACTIONS=false bun turbo test
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            GITHUB_ACTIONS=false bun turbo test
+            exit 0
+          fi
+          GITHUB_ACTIONS=false bun turbo test --affected
         env:
           OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER: ${{ runner.os == 'Windows' && 'true' || 'false' }}
+          TURBO_SCM_BASE: ${{ github.event.pull_request.base.sha || github.event.before }}
+          TURBO_SCM_HEAD: ${{ github.sha }}
 
       - name: Verify published codemode package
         if: runner.os == 'Linux'
@@ -122,8 +130,15 @@ jobs:
       - name: Verify packed workerd SDK
         if: runner.os == 'Linux'
         timeout-minutes: 15
-        working-directory: packages/sdk
-        run: bun run verify:package
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            bun turbo verify:package --filter=@opencode-ai/sdk
+            exit 0
+          fi
+          bun turbo verify:package --affected --filter=@opencode-ai/sdk
+        env:
+          TURBO_SCM_BASE: ${{ github.event.pull_request.base.sha || github.event.before }}
+          TURBO_SCM_HEAD: ${{ github.sha }}
 
       - name: Verify compiled service lifecycle
         if: always()
diff --git a/turbo.json b/turbo.json
index 3ee09f0fcbe..89ae3dc0daf 100644
--- a/turbo.json
+++ b/turbo.json
@@ -1,5 +1,12 @@
 {
   "$schema": "https://v2-8-13.turborepo.dev/schema.json",
+  "globalDependencies": [
+    "patches/**",
+    "bunfig.toml",
+    ".npmrc",
+    ".github/actions/setup-bun/**",
+    ".github/workflows/test.yml"
+  ],
   "globalEnv": ["CI", "OPENCODE_DISABLE_SHARE"],
   "globalPassThroughEnv": ["CI", "OPENCODE_DISABLE_SHARE"],
   "tasks": {
@@ -53,6 +60,9 @@
     "@opencode-ai/session-ui#test": {
       "dependsOn": ["^build"],
       "outputs": []
+    },
+    "@opencode-ai/sdk#verify:package": {
+      "outputs": []
     }
   }
 }