diff --git a/closures/go.mod b/closures/go.mod
new file mode 100644
index 0000000..e092793
--- /dev/null
+++ b/closures/go.mod
@@ -0,0 +1,3 @@
+module main
+
+go 1.27.0
diff --git a/closures/main.go b/closures/main.go
new file mode 100644
index 0000000..962248e
--- /dev/null
+++ b/closures/main.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+)
+
+func fib() func() int {
+	a, b := 0, 1
+	return func() int {
+		a, b = b, a+b
+		return b
+	}
+}
+
+func main() {
+	f := fib()
+	for x := f(); x < 100; x = f() {
+		fmt.Println(x)
+	}
+}