diff --git a/go.mod b/go.mod
index 43abb5f..9ec39cc 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module github.com/KARTIKrocks/goemail
 go 1.26
 
 require (
-	golang.org/x/sync v0.20.0
+	golang.org/x/sync v0.21.0
 	golang.org/x/time v0.15.0
 )
diff --git a/go.sum b/go.sum
index 1cf3113..495ef1b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
-golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
-golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
+golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/time v0.15.0 h1:bbrp8t3bGUeFOx08pvsMYRTCVSMk89u4tKbNOZbp88U=
 golang.org/x/time v0.15.0/go.mod h1:Y4YMaQmXwGQZoFaVFk4YpCt4FLQMYKZe9oeV/f4MSno=