diff --git a/Cargo.lock b/Cargo.lock
index 9eb4764..5c0625d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -729,9 +729,9 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b2eb9b34ce86f4f0f6d920356a7e1c766b95d4db07adea993487859a622d42c"
 dependencies = [
- "prost",
+ "prost 0.11.9",
  "prost-build",
- "prost-derive",
+ "prost-derive 0.11.9",
  "serde",
 ]
 
@@ -1366,7 +1366,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b82eaa1d779e9a4bc1c3217db8ffbeabaae1dca241bf70183242128d48681cd"
 dependencies = [
  "bytes",
- "prost-derive",
+ "prost-derive 0.11.9",
+]
+
+[[package]]
+name = "prost"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0f5d036824e4761737860779c906171497f6d55681139d8312388f8fe398922"
+dependencies = [
+ "bytes",
+ "prost-derive 0.12.4",
 ]
 
 [[package]]
@@ -1383,7 +1393,7 @@ dependencies = [
  "multimap",
  "petgraph",
  "prettyplease",
- "prost",
+ "prost 0.11.9",
  "prost-types",
  "regex",
  "syn 1.0.109",
@@ -1404,13 +1414,26 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "prost-derive"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19de2de2a00075bf566bee3bd4db014b11587e84184d3f7a791bc17f1a8e9e48"
+dependencies = [
+ "anyhow",
+ "itertools",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.37",
+]
+
 [[package]]
 name = "prost-types"
 version = "0.11.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "213622a1460818959ac1181aaeb2dc9c7f63df720db7d788b3e24eacd1983e13"
 dependencies = [
- "prost",
+ "prost 0.11.9",
 ]
 
 [[package]]
@@ -2356,7 +2379,7 @@ dependencies = [
  "gtfs-rt",
  "gtfs-structures",
  "polyline",
- "prost",
+ "prost 0.12.4",
  "protobuf",
  "rand",
  "redis",
diff --git a/Cargo.toml b/Cargo.toml
index 994d299..079fa8e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ geojson = "0.24.1"
 gtfs-rt = "0.4.0"
 gtfs-structures = "0.36.1"
 polyline = "0.10.1"
-prost = "0.11.9"
+prost = "0.12.4"
 protobuf = "3.3.0"
 rand = "0.8.5"
 redis = "0.23.3"