diff --git a/Cargo.lock b/Cargo.lock
index dd5d4b5dd46..563189fe6fe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1734,14 +1734,13 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.4.2"
+version = "1.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38cf2c13ed4745de91a5eb834e11c00bcc3709e773173b2ce4c56c9fbde04b9c"
+checksum = "54fd1046a3107eb58f42de31d656fee6853e5d276c455fd943742dce89fc3dd3"
 dependencies = [
  "aho-corasick",
  "memchr",
  "regex-syntax",
- "thread_local",
 ]
 
 [[package]]
@@ -1755,9 +1754,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.21"
+version = "0.6.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
+checksum = "24d5f089152e60f62d28b835fbff2cd2e8dc0baf1ac13343bef92ab7eed84548"
 
 [[package]]
 name = "region"
@@ -2137,15 +2136,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "thread_local"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
-dependencies = [
- "lazy_static",
-]
-
 [[package]]
 name = "time"
 version = "0.1.44"
diff --git a/lib/compiler-llvm/Cargo.toml b/lib/compiler-llvm/Cargo.toml
index 0baf3ae75c7..4ce893bb0f6 100644
--- a/lib/compiler-llvm/Cargo.toml
+++ b/lib/compiler-llvm/Cargo.toml
@@ -31,7 +31,7 @@ features = ["llvm10-0", "target-x86", "target-aarch64"]
 [build-dependencies]
 cc = "1.0"
 lazy_static = "1.4"
-regex = "1.3"
+regex = "1.4"
 semver = "0.11"
 rustc_version = "0.2"