diff --git a/Cargo.lock b/Cargo.lock
index 3115c0947..a5d3c8092 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1278,13 +1278,13 @@ checksum = "2f7254b99e31cad77da24b08ebf628882739a608578bb1bcdfc1f9c21260d7c0"
 
 [[package]]
 name = "onig"
-version = "6.3.2"
+version = "6.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1eb3502504c9c8b06634b38bfdda86a9a8cef6277f3dec4d8b17c115110dd2a3"
+checksum = "8c4b31c8722ad9171c6d77d3557db078cab2bd50afcc9d09c8b315c59df8ca4f"
 dependencies = [
  "bitflags",
- "lazy_static",
  "libc",
+ "once_cell",
  "onig_sys",
 ]
 
diff --git a/src/uu/expr/Cargo.toml b/src/uu/expr/Cargo.toml
index 2df229775..983c17535 100644
--- a/src/uu/expr/Cargo.toml
+++ b/src/uu/expr/Cargo.toml
@@ -18,7 +18,7 @@ path = "src/expr.rs"
 clap = { version = "3.2", 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=">=0.0.15", package="uucore", path="../../uucore" }
 
 [[bin]]