diff --git a/verify.go b/verify.go
index c286999..b34e34f 100644
--- a/verify.go
+++ b/verify.go
@@ -37,7 +37,7 @@ func (frc *Client) VerifyCaptchaResponse(ctx context.Context, captchaResponse st
 
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("X-Api-Key", frc.APIKey)
-	req.Header.Set("X-Frc-Sdk", "friendly-captcha-go-sdk@0.2.0")
+	req.Header.Set("X-Frc-Sdk", fmt.Sprintf("friendly-captcha-go-sdk@%s", Version()))
 
 	resp, err := frc.HTTPClient.Do(req)
 	if err != nil {
diff --git a/version.go b/version.go
new file mode 100644
index 0000000..fe9bc14
--- /dev/null
+++ b/version.go
@@ -0,0 +1,12 @@
+package friendlycaptcha
+
+import (
+	"runtime/debug"
+)
+
+func Version() string {
+	if bi, ok := debug.ReadBuildInfo(); ok {
+		return bi.Main.Version
+	}
+	return "unknown"
+}