diff --git a/third-party/manyhow/Cargo.toml b/third-party/manyhow/Cargo.toml
index 5909456..b839f34 100644
--- a/third-party/manyhow/Cargo.toml
+++ b/third-party/manyhow/Cargo.toml
@@ -94,7 +94,7 @@ default-features = false
 package = "syn"
 
 [dev-dependencies.proc-macro-utils]
-version = "0.8.0"
+version = "0.10.0"
 
 [dev-dependencies.proc-macro2]
 version = "1"