diff --git a/go.mod b/go.mod
index acd615a5bfe..e85ddadd9d7 100644
--- a/go.mod
+++ b/go.mod
@@ -2,11 +2,6 @@ module gitea.dev
 
 go 1.26.3
 
-// rfc5280 said: "The serial number is an integer assigned by the CA to each certificate."
-// But some CAs use negative serial number, just relax the check. related:
-// Default TLS cert uses negative serial number #895 https://github.com/microsoft/mssql-docker/issues/895
-godebug x509negativeserial=1
-
 require (
 	code.gitea.io/actions-proto-go v0.4.1
 	code.gitea.io/sdk/gitea v0.25.1