diff --git a/rs/Cargo.lock b/rs/Cargo.lock
index 3745142e..6a4b050f 100644
--- a/rs/Cargo.lock
+++ b/rs/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -386,9 +388,9 @@ dependencies = [
 
 [[package]]
 name = "pretty_assertions"
-version = "1.0.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0cfe1b2403f172ba0f234e500906ee0a3e493fb81092dac23ebefe129301cc"
+checksum = "c89f989ac94207d048d92db058e4f6ec7342b0971fc58d1271ca148b799b3563"
 dependencies = [
  "ansi_term",
  "ctor",
diff --git a/rs/Cargo.toml b/rs/Cargo.toml
index 29eb12de..0e5a9f18 100644
--- a/rs/Cargo.toml
+++ b/rs/Cargo.toml
@@ -28,7 +28,7 @@ regex = "1"
 
 [dev-dependencies]
 criterion = "0.3"
-pretty_assertions = "1.0"
+pretty_assertions = "1.2"
 
 [[bench]]
 name = "criterion"