diff --git a/Cargo.lock b/Cargo.lock
index cbfe4a3..2555d19 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -117,7 +117,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0dc92fb57ca44df6db8059111ab3af99a63d5d0f8375d9972e319a379c6bab76"
 dependencies = [
  "generic-array",
- "rand_core",
+ "rand_core 0.6.4",
  "subtle",
  "zeroize",
 ]
@@ -188,7 +188,7 @@ dependencies = [
  "ff",
  "generic-array",
  "group",
- "rand_core",
+ "rand_core 0.6.4",
  "sec1",
  "subtle",
  "zeroize",
@@ -235,7 +235,7 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0b50bfb653653f9ca9095b427bed08ab8d75a137839d9ad64eb11810d5b6393"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.4",
  "subtle",
 ]
 
@@ -267,7 +267,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0f9ef7462f7c099f518d754361858f86d8a07af53ba9af0fe635bbccb151a63"
 dependencies = [
  "ff",
- "rand_core",
+ "rand_core 0.6.4",
  "subtle",
 ]
 
@@ -344,7 +344,7 @@ name = "openprot-hal-blocking"
 version = "0.1.0"
 dependencies = [
  "embedded-hal 1.0.0",
- "rand_core",
+ "rand_core 0.9.3",
  "subtle",
  "zerocopy",
  "zeroize",
@@ -471,6 +471,12 @@ version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 
+[[package]]
+name = "rand_core"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99d9a13982dcf210057a8a78572b2217b667c3beacbf3a0d8b454f6f82837d38"
+
 [[package]]
 name = "rfc6979"
 version = "0.4.0"
@@ -503,7 +509,7 @@ dependencies = [
  "openprot-hal-blocking",
  "p256",
  "p384",
- "rand_core",
+ "rand_core 0.9.3",
  "zerocopy",
  "zeroize",
 ]
@@ -563,7 +569,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
 dependencies = [
  "digest",
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 489c699..b106cad 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,5 +28,5 @@ zerocopy = { version = "0.8", features = ["derive"] }
 zeroize = { version = "1.8", default-features = false, features = ["derive"] }
 subtle = { version = "2", default-features = false }
 # Pin to match Hubris ecosystem
-rand_core = { version = "0.6", default-features = false }
+rand_core = { version = "0.9", default-features = false }
 embedded-hal = "1.0"