diff --git a/divviup/rust/Cargo.lock b/divviup/rust/Cargo.lock
index 6c886a5..afe1005 100644
--- a/divviup/rust/Cargo.lock
+++ b/divviup/rust/Cargo.lock
@@ -983,9 +983,9 @@ checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
 [[package]]
 name = "janus_core"
-version = "0.6.28"
+version = "0.6.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba50f1d65b7cbed4401c7a46568dea43c0a21558dce90bd27fe3427cf802ad6b"
+checksum = "d7f99840568dbcf96429e580562cf2fc5d1cf1a485b19c14e79eddbc4f8e65c6"
 dependencies = [
  "anyhow",
  "backoff",
@@ -1015,9 +1015,9 @@ dependencies = [
 
 [[package]]
 name = "janus_messages"
-version = "0.6.28"
+version = "0.6.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9065c190b8f8f3ee244069883a9e935878f01e0b5dd3274b648eac0e43c5bbe1"
+checksum = "86d7536696b7bc6ef69d0d50c6cfc78d05ec649d687ba00c3d0b6f355a4a2349"
 dependencies = [
  "anyhow",
  "base64",
@@ -1630,18 +1630,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.201"
+version = "1.0.202"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "780f1cebed1629e4753a1a38a3c72d30b97ec044f0aef68cb26650a3c5cf363c"
+checksum = "226b61a0d411b2ba5ff6d7f73a476ac4f8bb900373459cd00fab8512828ba395"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.201"
+version = "1.0.202"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5e405930b9796f1c00bee880d03fc7e0bb4b9a11afc776885ffe84320da2865"
+checksum = "6048858004bcff69094cd972ed40a32500f153bd3be9f716b2eed2e8217c4838"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/divviup/rust/Cargo.toml b/divviup/rust/Cargo.toml
index 147231b..4475c5f 100644
--- a/divviup/rust/Cargo.toml
+++ b/divviup/rust/Cargo.toml
@@ -8,8 +8,8 @@ publish = false
 crate_type = ["cdylib"]
 
 [dependencies]
-janus_core = "0.6.28"
-janus_messages = "0.6.28"
+janus_core = "0.6.31"
+janus_messages = "0.6.31"
 jni = "0.21.1"
 prio = "0.15.5"
 rand = "0.8.5"