diff --git a/README.md b/README.md
index a26729d..4308772 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1 @@
-# samples
-
+# go hello-world
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..9fe83cc
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module example.com/hello
+
+go 1.17
+
+require github.com/OpenFunction/functions-framework-go v0.5.0
\ No newline at end of file
diff --git a/hello.go b/hello.go
new file mode 100644
index 0000000..1954c23
--- /dev/null
+++ b/hello.go
@@ -0,0 +1,17 @@
+package hello
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/OpenFunction/functions-framework-go/functions"
+)
+
+func init() {
+	functions.HTTP("Main", Main,
+		functions.WithFunctionPath("/"))
+}
+
+func Main(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintf(w, "Hello, world!\n")
+}