diff --git a/go.mod b/go.mod
index becccb4..f67f59d 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/prometheus/client_model
 
 go 1.19
 
-require google.golang.org/protobuf v1.32.0
+require google.golang.org/protobuf v1.33.0
diff --git a/go.sum b/go.sum
index b010a4f..f63a45a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
-google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
-google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=