diff --git a/Cargo.lock b/Cargo.lock
index 5d52f9b1d98..ffb2dc3dd2b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1286,21 +1286,21 @@ checksum = "7709cef83f0c1f58f666e746a08b21e0085f7440fa6a29cc194d68aac97a4225"
 
 [[package]]
 name = "onig"
-version = "6.3.1"
+version = "6.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67ddfe2c93bb389eea6e6d713306880c7f6dcc99a75b659ce145d962c861b225"
+checksum = "8c4b31c8722ad9171c6d77d3557db078cab2bd50afcc9d09c8b315c59df8ca4f"
 dependencies = [
  "bitflags",
- "lazy_static",
  "libc",
+ "once_cell",
  "onig_sys",
 ]
 
 [[package]]
 name = "onig_sys"
-version = "69.7.1"
+version = "69.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5dd3eee045c84695b53b20255bb7317063df090b68e18bfac0abb6c39cf7f33e"
+checksum = "7b829e3d7e9cc74c7e315ee8edb185bf4190da5acde74afd7fc59c35b1f086e7"
 dependencies = [
  "cc",
  "pkg-config",
diff --git a/src/uu/expr/Cargo.toml b/src/uu/expr/Cargo.toml
index 1b501ef438f..675bfef3d81 100644
--- a/src/uu/expr/Cargo.toml
+++ b/src/uu/expr/Cargo.toml
@@ -18,7 +18,7 @@ path = "src/expr.rs"
 clap = { version = "3.1", features = ["wrap_help", "cargo"] }
 num-bigint = "0.4.0"
 num-traits = "0.2.15"
-onig = { version = "~6.3", default-features = false }
+onig = { version = "~6.4", default-features = false }
 uucore = { version=">=0.0.11", package="uucore", path="../../uucore" }
 
 [[bin]]