diff --git a/Cargo.lock b/Cargo.lock
index 5d4dd8d..27b2d73 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -207,8 +207,8 @@ version = "0.1.0"
 dependencies = [
  "fs-err",
  "glob",
- "prost",
- "prost-build",
+ "prost 0.13.5",
+ "prost-build 0.14.1",
  "prost-wkt",
  "prost-wkt-build",
  "prost-wkt-types",
@@ -813,7 +813,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2796faa41db3ec313a31f7624d9286acf277b52de526150b7e69f3debf891ee5"
 dependencies = [
  "bytes",
- "prost-derive",
+ "prost-derive 0.13.5",
+]
+
+[[package]]
+name = "prost"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7231bd9b3d3d33c86b58adbac74b5ec0ad9f496b19d22801d773636feaa95f3d"
+dependencies = [
+ "bytes",
+ "prost-derive 0.14.1",
 ]
 
 [[package]]
@@ -829,8 +839,28 @@ dependencies = [
  "once_cell",
  "petgraph",
  "prettyplease",
- "prost",
- "prost-types",
+ "prost 0.13.5",
+ "prost-types 0.13.5",
+ "regex",
+ "syn",
+ "tempfile",
+]
+
+[[package]]
+name = "prost-build"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac6c3320f9abac597dcbc668774ef006702672474aad53c6d596b62e487b40b1"
+dependencies = [
+ "heck",
+ "itertools",
+ "log",
+ "multimap",
+ "once_cell",
+ "petgraph",
+ "prettyplease",
+ "prost 0.14.1",
+ "prost-types 0.14.1",
  "regex",
  "syn",
  "tempfile",
@@ -849,13 +879,35 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "prost-derive"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9120690fafc389a67ba3803df527d0ec9cbbc9cc45e4cc20b332996dfb672425"
+dependencies = [
+ "anyhow",
+ "itertools",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "prost-types"
 version = "0.13.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "52c2c1bf36ddb1a1c396b3601a3cec27c2462e45f07c386894ec3ccf5332bd16"
 dependencies = [
- "prost",
+ "prost 0.13.5",
+]
+
+[[package]]
+name = "prost-types"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9b4db3d6da204ed77bb26ba83b6122a73aeb2e87e25fbf7ad2e84c4ccbf8f72"
+dependencies = [
+ "prost 0.14.1",
 ]
 
 [[package]]
@@ -866,7 +918,7 @@ checksum = "497e1e938f0c09ef9cabe1d49437b4016e03e8f82fbbe5d1c62a9b61b9decae1"
 dependencies = [
  "chrono",
  "inventory",
- "prost",
+ "prost 0.13.5",
  "serde",
  "serde_derive",
  "serde_json",
@@ -880,9 +932,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "07b8bf115b70a7aa5af1fd5d6e9418492e9ccb6e4785e858c938e28d132a884b"
 dependencies = [
  "heck",
- "prost",
- "prost-build",
- "prost-types",
+ "prost 0.13.5",
+ "prost-build 0.13.5",
+ "prost-types 0.13.5",
  "quote",
 ]
 
@@ -893,9 +945,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c8cdde6df0a98311c839392ca2f2f0bcecd545f86a62b4e3c6a49c336e970fe5"
 dependencies = [
  "chrono",
- "prost",
- "prost-build",
- "prost-types",
+ "prost 0.13.5",
+ "prost-build 0.13.5",
+ "prost-types 0.13.5",
  "prost-wkt",
  "prost-wkt-build",
  "regex",
@@ -1273,7 +1325,7 @@ dependencies = [
  "http",
  "http-body-util",
  "hyper",
- "prost",
+ "prost 0.13.5",
  "reqwest",
  "serde",
  "serde_json",
@@ -1289,7 +1341,7 @@ version = "0.8.0"
 dependencies = [
  "prettyplease",
  "proc-macro2",
- "prost-build",
+ "prost-build 0.14.1",
  "quote",
  "syn",
 ]
diff --git a/crates/twirp-build/Cargo.toml b/crates/twirp-build/Cargo.toml
index 908c318..6d1f27f 100644
--- a/crates/twirp-build/Cargo.toml
+++ b/crates/twirp-build/Cargo.toml
@@ -14,7 +14,7 @@ repository = "https://github.com/github/twirp-rs"
 license-file = "./LICENSE"
 
 [dependencies]
-prost-build = "0.13"
+prost-build = "0.14"
 prettyplease = { version = "0.2" }
 quote = "1.0"
 syn = "2.0"
diff --git a/example/Cargo.toml b/example/Cargo.toml
index e8d41c5..95301ba 100644
--- a/example/Cargo.toml
+++ b/example/Cargo.toml
@@ -17,7 +17,7 @@ twirp-build = { path = "../crates/twirp-build" }
 
 fs-err = "3.1"
 glob = "0.3.0"
-prost-build = "0.13"
+prost-build = "0.14"
 prost-wkt-build = "0.6"
 
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