diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 75c68d7..335ffda 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 sled = "0.34.6"
 tonic = "0.4.0"
 prost = "0.7"
-prost-types = "0.7"
+prost-types = "0.12"
 uuid = { version = "0.8.2", features = ["v4"] }
 
 [build-dependencies]