diff --git a/Cargo.lock b/Cargo.lock
index c250b730958..30e303db5b3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4745,9 +4745,9 @@ dependencies = [
 
 [[package]]
 name = "tonic-build"
-version = "0.8.4"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bf5e9b9c0f7e0a7c027dcfaba7b2c60816c7049171f679d99ee2ff65d0de8c4"
+checksum = "0f60a933bbea70c95d633c04c951197ddf084958abaa2ed502a3743bdd8d8dd7"
 dependencies = [
  "prettyplease",
  "proc-macro2 1.0.53",
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index 2a915d29029..5fccfaa0e2c 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -171,7 +171,7 @@ console-subscriber = { version = "0.1.8", optional = true }
 vergen = { version = "7.5.1", default-features = false, features = ["cargo", "git"] }
 
 # test feature lightwalletd-grpc-tests
-tonic-build = { version = "0.8.0", optional = true }
+tonic-build = { version = "0.9.1", optional = true }
 
 [dev-dependencies]
 abscissa_core = { version = "0.5", features = ["testing"] }