diff --git a/core/client_option.go b/core/client_option.go
index b833661..960d44e 100644
--- a/core/client_option.go
+++ b/core/client_option.go
@@ -42,6 +42,6 @@ func (c *ClientOptions) cloneHeader() http.Header {
 	headers := c.HTTPHeader.Clone()
 	headers.Set("X-Fern-Language", "Go")
 	headers.Set("X-Fern-SDK-Name", "github.com/vellum-ai/vellum-client-go")
-	headers.Set("X-Fern-SDK-Version", "v0.1.12")
+	headers.Set("X-Fern-SDK-Version", "v0.1.13")
 	return headers
 }
diff --git a/go.mod b/go.mod
index 59cbe54..de1ef52 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: MIT
 module github.com/vellum-ai/vellum-client-go
 
 go 1.18