diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index 0213855a9..8478b15a9 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -87,9 +87,9 @@ dependencies = [
 
 [[package]]
 name = "bitflags"
-version = "1.2.1"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+checksum = "2da1976d75adbe5fbc88130ecd119529cf1cc6a93ae1546d8696ee66f0d21af1"
 
 [[package]]
 name = "block_util"