diff --git a/go.mod b/go.mod
index 2a9ee64..00db5a3 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,6 @@ module github.com/digitalocean/go-nbd
 
 go 1.21.12
 
-require golang.org/x/sync v0.8.0
+require golang.org/x/sync v0.9.0
 
 require github.com/google/go-cmp v0.6.0
diff --git a/go.sum b/go.sum
index fa44e8a..2243e7b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
+golang.org/x/sync v0.9.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=