diff --git a/risc0/rust/methods/guest/Cargo.lock b/risc0/rust/methods/guest/Cargo.lock
index a9988a42d..ec7d0c687 100644
--- a/risc0/rust/methods/guest/Cargo.lock
+++ b/risc0/rust/methods/guest/Cargo.lock
@@ -255,7 +255,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "246a225cc6131e9ee4f24619af0f19d67761fff15d7ccc22e42b80846e69449a"
 dependencies = [
  "num-traits",
- "rand 0.8.5",
+ "rand 0.8.6",
 ]
 
 [[package]]
@@ -1579,7 +1579,7 @@ dependencies = [
  "num-integer",
  "num-iter",
  "num-traits",
- "rand 0.8.5",
+ "rand 0.8.6",
  "smallvec",
  "zeroize",
 ]
@@ -1901,9 +1901,9 @@ checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
 [[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 = [
  "rand_chacha 0.3.1",
  "rand_core 0.6.4",
@@ -2342,7 +2342,7 @@ checksum = "c141e807189ad38a07276942c6623032d3753c8859c146104ac2e4d68865945a"
 dependencies = [
  "borsh",
  "proptest",
- "rand 0.8.5",
+ "rand 0.8.6",
  "rand 0.9.2",
  "ruint-macro",
  "serde_core",