diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..c14a2974a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+go.sum
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 230439a49..e9c415f4f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,9 @@ matrix:
   - go: "1.13"
     env: DIRS=v3/integrations/nrecho
   - go: "1.13"
-    env: DIRS=v3/integrations/nrgin/v1
+    env:
+      - DIRS=v3/integrations/nrgin/v1
+      - TESTMASTER=github.com/gin-gonic/gin
   - go: "1.13"
     env: DIRS=v3/integrations/nrgorilla/v1
   - go: "1.13"
@@ -34,13 +36,17 @@ matrix:
   - go: "1.13"
     env: DIRS=v3/integrations/nrpkgerrors
   - go: "1.13"
-    env: DIRS=v3/integrations/nrlambda
+    env:
+      - DIRS=v3/integrations/nrlambda
+      - TESTMASTER=github.com/aws/aws-lambda-go
   - go: "1.13"
     env: DIRS=v3/integrations/nrmysql
   - go: "1.13"
     env: DIRS=v3/integrations/nrpq
   - go: "1.13"
-    env: DIRS=v3/integrations/nrsqlite3
+    env:
+      - DIRS=v3/integrations/nrsqlite3
+      - TESTMASTER=github.com/mattn/go-sqlite3
   - go: "1.13"
     env: DIRS=v3/integrations/nrgrpc
   # As of October 2019, errors result from go get -u github.com/micro/go-micro
diff --git a/build-script.sh b/build-script.sh
index 1fc470e59..042556f2e 100755
--- a/build-script.sh
+++ b/build-script.sh
@@ -10,12 +10,23 @@ for dir in $DIRS
 do
 	cd "$pwd/$dir"
 
-	# This can be removed once we add go.mod files for everything.
-	go get -t ./...
+	if [ -f "go.mod" ]; then
+		go mod edit -replace github.com/newrelic/go-agent/v3=$pwd/v3
+	else
+		go get -t ./...
+	fi
 
 	go test -race -benchtime=1ms -bench=. ./...
 	go vet ./...
 
+	# Test again against the latest version of the dependencies to ensure that
+	# our instrumentation is up to date.  TODO: Perhaps it is possible to
+	# upgrade all go.mod dependencies to latest master with a go command.
+	if [ -n "$TESTMASTER" ]; then
+		go get -u "$TESTMASTER@master"
+		go test -race -benchtime=1ms -bench=. ./...
+	fi
+
 	if [[ -n "$(go version | grep $LATEST_VERSION)" ]]; then
 		# golint requires a supported version of Go, which in practice is currently 1.9+.
 		# See: https://github.com/golang/lint#installation
diff --git a/v3/go.mod b/v3/go.mod
new file mode 100644
index 000000000..3b2215053
--- /dev/null
+++ b/v3/go.mod
@@ -0,0 +1,3 @@
+module github.com/newrelic/go-agent/v3
+
+go 1.13
diff --git a/v3/integrations/nrgin/v1/go.mod b/v3/integrations/nrgin/v1/go.mod
new file mode 100644
index 000000000..5e355d698
--- /dev/null
+++ b/v3/integrations/nrgin/v1/go.mod
@@ -0,0 +1,8 @@
+module github.com/newrelic/go-agent/v3/integrations/nrgin/v1
+
+go 1.13
+
+require (
+	github.com/gin-gonic/gin v1.4.0
+	github.com/newrelic/go-agent/v3 v3.0.0
+)
diff --git a/v3/integrations/nrgin/v1/nrgin_test.go b/v3/integrations/nrgin/v1/nrgin_test.go
index 3056f1d17..e28c34356 100644
--- a/v3/integrations/nrgin/v1/nrgin_test.go
+++ b/v3/integrations/nrgin/v1/nrgin_test.go
@@ -174,11 +174,21 @@ func errorStatus(c *gin.Context) {
 	c.String(500, "an error happened")
 }
 
+const (
+	// The Gin.Context.Status method behavior changed with this pull
+	// request: https://github.com/gin-gonic/gin/pull/1606.  This change
+	// affects our ability to instrument the response code. In Gin v1.4.0
+	// and below, we always recorded a 200 status, whereas with newer Gin
+	// versions we now correctly capture the status.
+	statusFixVersion = "v1.4.0-dev"
+)
+
 func TestStatusCodes(t *testing.T) {
 	// Test that we are correctly able to collect status code.
-	// This behavior changed with this pull request: https://github.com/gin-gonic/gin/pull/1606
-	// In Gin v1.4.0 and below, we always recorded a 200 status, whereas with
-	// newer Gin versions we now correctly capture the status.
+	expectCode := 200
+	if gin.Version == statusFixVersion {
+		expectCode = 500
+	}
 	app := integrationsupport.NewBasicTestApp()
 	router := gin.Default()
 	router.Use(Middleware(app.Application))
@@ -203,8 +213,8 @@ func TestStatusCodes(t *testing.T) {
 		},
 		UserAttributes: map[string]interface{}{},
 		AgentAttributes: map[string]interface{}{
-			"httpResponseCode":             500,
-			"response.statusCode":          500,
+			"httpResponseCode":             expectCode,
+			"response.statusCode":          expectCode,
 			"request.method":               "GET",
 			"request.uri":                  "/err",
 			"response.headers.contentType": "text/plain; charset=utf-8",
@@ -219,6 +229,10 @@ func noBody(c *gin.Context) {
 func TestNoResponseBody(t *testing.T) {
 	// Test that when no response body is sent (i.e. c.Writer.Write is never
 	// called) that we still capture status code.
+	expectCode := 200
+	if gin.Version == statusFixVersion {
+		expectCode = 500
+	}
 	app := integrationsupport.NewBasicTestApp()
 	router := gin.Default()
 	router.Use(Middleware(app.Application))
@@ -243,8 +257,8 @@ func TestNoResponseBody(t *testing.T) {
 		},
 		UserAttributes: map[string]interface{}{},
 		AgentAttributes: map[string]interface{}{
-			"httpResponseCode":    500,
-			"response.statusCode": 500,
+			"httpResponseCode":    expectCode,
+			"response.statusCode": expectCode,
 			"request.method":      "GET",
 			"request.uri":         "/nobody",
 		},
diff --git a/v3/integrations/nrlambda/go.mod b/v3/integrations/nrlambda/go.mod
new file mode 100644
index 000000000..b699ecaf8
--- /dev/null
+++ b/v3/integrations/nrlambda/go.mod
@@ -0,0 +1,8 @@
+module github.com/newrelic/go-agent/v3/integrations/nrlambda
+
+go 1.13
+
+require (
+	github.com/aws/aws-lambda-go v1.11.0
+	github.com/newrelic/go-agent/v3 v3.0.0
+)
diff --git a/v3/integrations/nrsqlite3/go.mod b/v3/integrations/nrsqlite3/go.mod
new file mode 100644
index 000000000..433e768c4
--- /dev/null
+++ b/v3/integrations/nrsqlite3/go.mod
@@ -0,0 +1,8 @@
+module github.com/newrelic/go-agent/v3/integrations/nrsqlite3
+
+go 1.13
+
+require (
+	github.com/mattn/go-sqlite3 v1.0.0
+	github.com/newrelic/go-agent/v3 v3.0.0
+)