diff --git a/Cargo.lock b/Cargo.lock
index 11e223146..6ae443adc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1840,7 +1840,7 @@ dependencies = [
  "opentelemetry-semantic-conventions",
  "postgres-protocol",
  "postgres-types",
- "prio 0.15.1",
+ "prio 0.15.2",
  "prometheus",
  "rand",
  "regex",
@@ -1938,7 +1938,7 @@ dependencies = [
  "opentelemetry",
  "postgres-protocol",
  "postgres-types",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "regex",
  "reqwest",
@@ -1985,7 +1985,7 @@ dependencies = [
  "janus_core",
  "janus_messages 0.6.0-prerelease-1",
  "mockito",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "reqwest",
  "thiserror",
@@ -2011,7 +2011,7 @@ dependencies = [
  "janus_core",
  "janus_messages 0.6.0-prerelease-1",
  "mockito",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "reqwest",
  "retry-after",
@@ -2042,7 +2042,7 @@ dependencies = [
  "k8s-openapi",
  "kube",
  "mockito",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "reqwest",
  "ring",
@@ -2085,7 +2085,7 @@ dependencies = [
  "janus_messages 0.6.0-prerelease-1",
  "k8s-openapi",
  "kube",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "reqwest",
  "serde",
@@ -2118,7 +2118,7 @@ dependencies = [
  "janus_interop_binaries",
  "janus_messages 0.6.0-prerelease-1",
  "opentelemetry",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "regex",
  "reqwest",
@@ -2167,7 +2167,7 @@ dependencies = [
  "derivative",
  "hex",
  "num_enum",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "serde",
  "serde_test",
@@ -2189,7 +2189,7 @@ dependencies = [
  "janus_collector",
  "janus_core",
  "janus_messages 0.6.0-prerelease-1",
- "prio 0.15.1",
+ "prio 0.15.2",
  "rand",
  "reqwest",
  "serde_json",
@@ -2560,6 +2560,7 @@ dependencies = [
  "num-bigint",
  "num-integer",
  "num-traits",
+ "serde",
 ]
 
 [[package]]
@@ -3020,9 +3021,9 @@ dependencies = [
 
 [[package]]
 name = "prio"
-version = "0.15.1"
+version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2e546dc580118e2120309c8aa7bb0da8deabd4b848289c486e9429a27c05594"
+checksum = "06023d4cf59f8c136ac9a11affa42d25f1ecf251a5065585be0b9d7a07c01217"
 dependencies = [
  "aes",
  "bitvec",
diff --git a/Cargo.toml b/Cargo.toml
index 0b9113989..0af9c8296 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ janus_messages = { version = "0.6.0-prerelease-1", path = "messages" }
 k8s-openapi = { version = "0.18.0", features = ["v1_24"] }  # keep this version in sync with what is referenced by the indirect dependency via `kube`
 kube = { version = "0.82.2", default-features = false, features = ["client", "rustls-tls"] }
 opentelemetry = { version = "0.20", features = ["metrics"] }
-prio = { version = "0.15.1", features = ["multithreaded", "experimental"] }
+prio = { version = "0.15.2", features = ["multithreaded", "experimental"] }
 serde = { version = "1.0.188", features = ["derive"] }
 serde_json = "1.0.106"
 serde_test = "1.0.175"
diff --git a/messages/Cargo.toml b/messages/Cargo.toml
index 58cd7edae..1a25acebe 100644
--- a/messages/Cargo.toml
+++ b/messages/Cargo.toml
@@ -20,7 +20,7 @@ hex = "0.4"
 num_enum = "0.7.0"
 # We can't pull prio in from the workspace because that would enable default features, and we do not
 # want prio/crypto-dependencies
-prio = { version = "0.15.1", default-features = false, features = ["multithreaded", "experimental"] }
+prio = { version = "0.15.2", default-features = false, features = ["multithreaded", "experimental"] }
 rand = "0.8"
 serde.workspace = true
 thiserror.workspace = true