diff --git a/divviup/rust/Cargo.lock b/divviup/rust/Cargo.lock
index e096830..b8ff29e 100644
--- a/divviup/rust/Cargo.lock
+++ b/divviup/rust/Cargo.lock
@@ -844,9 +844,9 @@ dependencies = [
 
 [[package]]
 name = "http"
-version = "0.2.9"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd6effc99afb63425aff9b05836f029929e345a6148a14b7ecd5ab67af944482"
+checksum = "8947b1a6fad4393052c7ba1f4cd97bed3e953a95c79c92ad9b051a04611d9fbb"
 dependencies = [
  "bytes",
  "fnv",
@@ -1010,9 +1010,9 @@ checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
 [[package]]
 name = "janus_core"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34b754cdb01fdf0f81e1030f4b0c42aeea417515113d21e7711a83d85656eed0"
+checksum = "9230de1ecbad912885c5381b2f9b497a94f85903277234f725ac054f8c70da16"
 dependencies = [
  "anyhow",
  "backoff",
@@ -1041,9 +1041,9 @@ dependencies = [
 
 [[package]]
 name = "janus_messages"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "986cb6ecebff29bddf021cc7384f73672b9e6bf06cc67bb5ad391ae3dde3fda3"
+checksum = "13718a8edf381b1a97799c4853000abc3e5907745c695b99af03b93770febbd9"
 dependencies = [
  "anyhow",
  "base64",
@@ -1898,9 +1898,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.33.0"
+version = "1.34.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f38200e3ef7995e5ef13baec2f432a6da0aa9ac495b2c0e8f3b7eec2c92d653"
+checksum = "d0c014766411e834f7af5b8f4cf46257aab4036ca95e9d2c144a10f59ad6f5b9"
 dependencies = [
  "backtrace",
  "bytes",
@@ -1918,9 +1918,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "2.1.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
+checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/divviup/rust/Cargo.toml b/divviup/rust/Cargo.toml
index 6bd9a2a..a85b852 100644
--- a/divviup/rust/Cargo.toml
+++ b/divviup/rust/Cargo.toml
@@ -8,8 +8,8 @@ publish = false
 crate_type = ["cdylib"]
 
 [dependencies]
-janus_core = "0.6.3"
-janus_messages = "0.6.3"
+janus_core = "0.6.4"
+janus_messages = "0.6.4"
 jni = "0.21.1"
 prio = "0.15.3"
 rand = "0.8.5"