diff --git a/server/go.mod b/server/go.mod
index c20ea31..576dac2 100644
--- a/server/go.mod
+++ b/server/go.mod
@@ -95,7 +95,6 @@ require (
 	github.com/mozillazg/go-httpheader v0.2.1 // indirect
 	github.com/pierrec/lz4/v4 v4.1.14 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
 	github.com/richardlehane/mscfb v1.0.4 // indirect