diff --git a/Cargo.toml b/Cargo.toml
index 7556c05..ca1a658 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ license = "Apache-2.0"
 
 [dependencies]
 prost = "0.11"
-tonic = "0.8"
+tonic = "0.9"
 
 [build-dependencies]
-tonic-build = "0.8"
+tonic-build = "0.9"