diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 93fe623..fdcac87 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,4 +32,13 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: ${{ env.GOVERSION }}
-      - run: go test -cover ./...
+      - run: make test
+
+  integration_test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GOVERSION }}
+      - run: make integration-test
diff --git a/Makefile b/Makefile
index 178431b..0721460 100644
--- a/Makefile
+++ b/Makefile
@@ -15,9 +15,7 @@ integration-test: clean coroc
 	go run -tags durable ./dispatchtest/integration # durable mode
 
 clean:
-	find . -name '*_durable.go' -delete
+	@find . -name '*_durable.go' -delete
 
 coroc:
-	@which coroc &>/dev/null \
-		|| echo "Installing coroc..." \
-		&& go install github.com/dispatchrun/coroutine/compiler/cmd/coroc@latest
+	@which coroc >/dev/null || go install github.com/dispatchrun/coroutine/compiler/cmd/coroc@latest
diff --git a/dispatchclient/client.go b/dispatchclient/client.go
index 22ec311..c5cd499 100644
--- a/dispatchclient/client.go
+++ b/dispatchclient/client.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchclient
 
 import (
diff --git a/dispatchclient/serde.go b/dispatchclient/serde.go
index bb47225..b06d2af 100644
--- a/dispatchclient/serde.go
+++ b/dispatchclient/serde.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchclient
 
 import "github.com/dispatchrun/coroutine/types"
diff --git a/dispatchcoro/volatile.go b/dispatchcoro/volatile.go
index ccab6d7..096f9a5 100644
--- a/dispatchcoro/volatile.go
+++ b/dispatchcoro/volatile.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchcoro
 
 import (
diff --git a/dispatchproto/any.go b/dispatchproto/any.go
index 5b1672b..6da878c 100644
--- a/dispatchproto/any.go
+++ b/dispatchproto/any.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import (
diff --git a/dispatchproto/error.go b/dispatchproto/error.go
index d1f76e3..4aac910 100644
--- a/dispatchproto/error.go
+++ b/dispatchproto/error.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import (
diff --git a/dispatchproto/function.go b/dispatchproto/function.go
index 936762f..cdc0863 100644
--- a/dispatchproto/function.go
+++ b/dispatchproto/function.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import "context"
diff --git a/dispatchproto/id.go b/dispatchproto/id.go
index d548c94..278b58d 100644
--- a/dispatchproto/id.go
+++ b/dispatchproto/id.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 // ID is an identifier for a dispatched function call.
diff --git a/dispatchproto/proto.go b/dispatchproto/proto.go
index 3adcb79..ba9c35c 100644
--- a/dispatchproto/proto.go
+++ b/dispatchproto/proto.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import (
diff --git a/dispatchproto/serde.go b/dispatchproto/serde.go
index 4228b39..91d96b1 100644
--- a/dispatchproto/serde.go
+++ b/dispatchproto/serde.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import (
diff --git a/dispatchproto/status.go b/dispatchproto/status.go
index 4b62435..82d5ed2 100644
--- a/dispatchproto/status.go
+++ b/dispatchproto/status.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import (
diff --git a/dispatchproto/unsafe.go b/dispatchproto/unsafe.go
index 6160238..bcfa766 100644
--- a/dispatchproto/unsafe.go
+++ b/dispatchproto/unsafe.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchproto
 
 import (
diff --git a/dispatchserver/endpoint.go b/dispatchserver/endpoint.go
index 4021d11..d4d9155 100644
--- a/dispatchserver/endpoint.go
+++ b/dispatchserver/endpoint.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchserver
 
 import (
diff --git a/dispatchserver/server.go b/dispatchserver/server.go
index 65e51f9..96458e4 100644
--- a/dispatchserver/server.go
+++ b/dispatchserver/server.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchserver
 
 import (
diff --git a/dispatchtest/endpoint.go b/dispatchtest/endpoint.go
index 99b2b6c..fc7b46d 100644
--- a/dispatchtest/endpoint.go
+++ b/dispatchtest/endpoint.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchtest
 
 import (
diff --git a/dispatchtest/integration/main.go b/dispatchtest/integration/main.go
index 550a3ca..ccfa2d5 100644
--- a/dispatchtest/integration/main.go
+++ b/dispatchtest/integration/main.go
@@ -52,5 +52,6 @@ func run() error {
 	if output != "88888888" {
 		return fmt.Errorf("unexpected output: %q", output)
 	}
+	fmt.Println("OK")
 	return nil
 }
diff --git a/dispatchtest/key.go b/dispatchtest/key.go
index 9bd56ac..4693e25 100644
--- a/dispatchtest/key.go
+++ b/dispatchtest/key.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchtest
 
 import (
diff --git a/dispatchtest/run.go b/dispatchtest/run.go
index 476701a..f03e44b 100644
--- a/dispatchtest/run.go
+++ b/dispatchtest/run.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchtest
 
 import (
diff --git a/dispatchtest/server.go b/dispatchtest/server.go
index dcf01d3..ac77568 100644
--- a/dispatchtest/server.go
+++ b/dispatchtest/server.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package dispatchtest
 
 import (
diff --git a/go.mod b/go.mod
index d2d3096..0b52a2c 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	connectrpc.com/connect v1.16.2
 	connectrpc.com/validate v0.1.0
 	github.com/aws/aws-lambda-go v1.47.0
-	github.com/dispatchrun/coroutine v0.9.0
+	github.com/dispatchrun/coroutine v0.9.1
 	github.com/offblocks/httpsig v0.8.1
 	golang.org/x/sys v0.21.0
 	google.golang.org/protobuf v1.34.2
diff --git a/go.sum b/go.sum
index 3aa4470..0ce5cb1 100644
--- a/go.sum
+++ b/go.sum
@@ -17,8 +17,8 @@ github.com/bufbuild/protovalidate-go v0.6.2/go.mod h1:4BR3rKEJiUiTy+sqsusFn2ladO
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dispatchrun/coroutine v0.9.0 h1:OKDggtjKVbEYP6DRKzRSvwcFHlXnLuhncqpH/bUf7Bg=
-github.com/dispatchrun/coroutine v0.9.0/go.mod h1:4/Lb6fpuR+IQa3CPWBBbVG5gbZEIBqC48Q/PgWmRxKM=
+github.com/dispatchrun/coroutine v0.9.1 h1:EYJEXrB2ogbXnN4pJGTxzv260vxgAmZnstouTzqwA/E=
+github.com/dispatchrun/coroutine v0.9.1/go.mod h1:4/Lb6fpuR+IQa3CPWBBbVG5gbZEIBqC48Q/PgWmRxKM=
 github.com/dunglas/httpsfv v1.0.2 h1:iERDp/YAfnojSDJ7PW3dj1AReJz4MrwbECSSE59JWL0=
 github.com/dunglas/httpsfv v1.0.2/go.mod h1:zID2mqw9mFsnt7YC3vYQ9/cjq30q41W+1AnDwH8TiMg=
 github.com/envoyproxy/protoc-gen-validate v1.0.4 h1:gVPz/FMfvh57HdSJQyvBtF00j8JU4zdyUgIUNhlgg0A=
diff --git a/internal/auth/key.go b/internal/auth/key.go
index 3d92283..1a406b1 100644
--- a/internal/auth/key.go
+++ b/internal/auth/key.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package auth
 
 import (
diff --git a/internal/auth/signature.go b/internal/auth/signature.go
index 9af50b6..f9a6a38 100644
--- a/internal/auth/signature.go
+++ b/internal/auth/signature.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package auth
 
 import (
diff --git a/internal/env/env.go b/internal/env/env.go
index b240568..c8816a2 100644
--- a/internal/env/env.go
+++ b/internal/env/env.go
@@ -1,3 +1,5 @@
+//go:build !durable
+
 package env
 
 import "strings"