diff --git a/go.mod b/go.mod
index be353eb408d43823b9aeb35d8019831248a97226..c0494b55716236b54229c65785d32a89c8061137 100644
--- a/go.mod
+++ b/go.mod
@@ -7,5 +7,5 @@ require (
 	github.com/jhillyerd/enmime v1.1.0
 	github.com/oschwald/geoip2-golang v1.9.0
 	github.com/prometheus/client_golang v1.11.0
-	golang.org/x/sync v0.6.0
+	golang.org/x/sync v0.7.0
 )
diff --git a/go.sum b/go.sum
index 06990f84313847aab7cf1ca25a6930cca143ecab..f87c49dc56df419d2a3ef7c8d6ed06ecaf2e34bc 100644
--- a/go.sum
+++ b/go.sum
@@ -211,6 +211,8 @@ golang.org/x/sync v0.5.0 h1:60k92dhOjHxJkrqnwsfl8KuaHbn/5dl0lUPUklKo3qE=
 golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
 golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=