diff --git a/build/rust/Cargo.lock b/build/rust/Cargo.lock
index c9b6b7f9f140..edabd88ad57d 100644
--- a/build/rust/Cargo.lock
+++ b/build/rust/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "adblock"
-version = "0.4.3"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52bdd00675903fd86d5d3109bb7899387c85cab52f990d14481546cb9a7102bf"
+checksum = "09d4aa5ba70fcd0dff8ab3b7f4b8138430c4475143a157e4ce992e99334e66a1"
 dependencies = [
  "base64 0.13.0",
  "bitflags",
diff --git a/components/adblock_rust_ffi/Cargo.toml b/components/adblock_rust_ffi/Cargo.toml
index e02593d1d6b2..f8ed6c93579d 100644
--- a/components/adblock_rust_ffi/Cargo.toml
+++ b/components/adblock_rust_ffi/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Brian R. Bondy <netzen@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-adblock = { version = "0.4.3", default-features = false, features = ["full-regex-handling", "object-pooling"] }
+adblock = { version = "0.5.1", default-features = false, features = ["full-regex-handling", "object-pooling"] }
 serde_json = "1.0"
 libc = "0.2"