diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index e2207ba..078a962 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -757,7 +757,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8d162beedaa69905488a8da94f5ac3edb4dd4788b732fadb7bd120b2625c1976"
 dependencies = [
  "data-encoding",
- "syn 2.0.108",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1444,7 +1444,7 @@ dependencies = [
  "p256",
  "pem",
  "rand 0.9.2",
- "rand_core 0.6.4",
+ "rand_core 0.9.3",
  "serde",
  "serde_bytes",
  "serde_json",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 5c8383d..883d121 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -49,7 +49,7 @@ uuid = "1.16.0"
 x509-cert = { version = "0.2.5", features = ["hazmat", "builder", "pem"] }
 
 [dev-dependencies]
-rand_core = "0.6"
+rand_core = "0.9"
 
 [[bin]]
 name = "uniffi-bindgen"