diff --git a/ifaces.go b/ifaces.go
new file mode 100644
index 0000000..42f4ddd
--- /dev/null
+++ b/ifaces.go
@@ -0,0 +1,8 @@
+package common
+
+import "net"
+
+// Dialer is an interface that should exist in stdlib honestly. Make it make sense that it doesn't.
+type Dialer interface {
+	Dial(network, address string) (net.Conn, error)
+}
diff --git a/ifaces_test.go b/ifaces_test.go
new file mode 100644
index 0000000..a3268f6
--- /dev/null
+++ b/ifaces_test.go
@@ -0,0 +1,16 @@
+package common
+
+import (
+	"net"
+	"testing"
+)
+
+func needsDialer(t *testing.T, d any) {
+	if _, ok := d.(Dialer); !ok {
+		t.Fatal("d is not a Dialer")
+	}
+}
+
+func TestDialer(t *testing.T) {
+	needsDialer(t, &net.Dialer{})
+}