diff --git a/Cargo.lock b/Cargo.lock
index bc67e99..04fd593 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2568,12 +2568,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "multimap"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d87ecb2933e8aeadb3e3a02b828fed80a7528047e68b4f424523a0981a3a084"
-
 [[package]]
 name = "nanorand"
 version = "0.7.0"
@@ -2951,27 +2945,6 @@ dependencies = [
  "prost-derive",
 ]
 
-[[package]]
-name = "prost-build"
-version = "0.12.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22505a5c94da8e3b7c2996394d1c933236c4d743e81a410bcca4e6989fc066a4"
-dependencies = [
- "bytes",
- "heck",
- "itertools",
- "log",
- "multimap",
- "once_cell",
- "petgraph",
- "prettyplease",
- "prost",
- "prost-types",
- "regex",
- "syn 2.0.117",
- "tempfile",
-]
-
 [[package]]
 name = "prost-derive"
 version = "0.12.6"
@@ -4335,13 +4308,12 @@ dependencies = [
 
 [[package]]
 name = "tonic-build"
-version = "0.11.0"
+version = "0.14.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be4ef6dd70a610078cb4e338a0f79d06bc759ff1b22d2120c2ff02ae264ba9c2"
+checksum = "c68f61875ac5293cf72e6c8cf0158086428c82c37229e98c840878f1706b0322"
 dependencies = [
  "prettyplease",
  "proc-macro2",
- "prost-build",
  "quote",
  "syn 2.0.117",
 ]
diff --git a/crates/flowproto/Cargo.toml b/crates/flowproto/Cargo.toml
index 21b8ac3..502e071 100644
--- a/crates/flowproto/Cargo.toml
+++ b/crates/flowproto/Cargo.toml
@@ -9,4 +9,4 @@ prost = "0.12"
 prost-types = "0.12"
 
 [build-dependencies]
-tonic-build = "0.11"
+tonic-build = "0.14"