diff --git a/dicectf-quals-2025/nil-circ/challenge/Cargo.lock b/dicectf-quals-2025/nil-circ/challenge/Cargo.lock
index 565c89a..4155838 100644
--- a/dicectf-quals-2025/nil-circ/challenge/Cargo.lock
+++ b/dicectf-quals-2025/nil-circ/challenge/Cargo.lock
@@ -764,9 +764,9 @@ checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "5ca0ecfa931c29007047d1bc58e623ab12e5590e8c7cc53200d5202b69266d8a"
 dependencies = [
  "libc",
  "rand_chacha",
diff --git a/dicectf-quals-2025/nil-circ/challenge/Cargo.toml b/dicectf-quals-2025/nil-circ/challenge/Cargo.toml
index a2dbcf6..1da5ee3 100644
--- a/dicectf-quals-2025/nil-circ/challenge/Cargo.toml
+++ b/dicectf-quals-2025/nil-circ/challenge/Cargo.toml
@@ -8,7 +8,7 @@ blake3 = "1.7.0"
 clap = { version = "4.5.32", features = ["derive"] }
 curve25519-dalek = "4.1.3"
 hex = "0.4.3"
-rand = "0.8.5"
+rand = "0.8.6"
 
 fancy-garbling = {git = "https://github.com/GaloisInc/swanky.git", branch = "dev"}
 ocelot = {git = "https://github.com/GaloisInc/swanky.git", branch = "dev"}