diff --git a/Cargo.lock b/Cargo.lock
index 5d8369027..eaab9f990 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2632,7 +2632,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c24fcd450d3fa2b592732565aa4f17a27a61c65ece4726353e000939b0edee34"
 dependencies = [
  "libc",
- "rand_chacha 0.3.0",
+ "rand_chacha 0.3.1",
  "rand_core 0.6.2",
  "rand_hc 0.3.0",
 ]
@@ -2649,9 +2649,9 @@ dependencies = [
 
 [[package]]
 name = "rand_chacha"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
  "rand_core 0.6.2",
@@ -4439,7 +4439,7 @@ dependencies = [
  "proptest",
  "proptest-derive",
  "rand 0.8.1",
- "rand_chacha 0.3.0",
+ "rand_chacha 0.3.1",
  "rand_core 0.6.2",
  "redjubjub",
  "ripemd160",