diff --git a/Cargo.lock b/Cargo.lock
index 827d8cf..269f7de 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -81,16 +81,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "ctor"
-version = "0.1.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccc0a48a9b826acdf4028595adc9db92caea352f7af011a3034acd172a52a0aa"
-dependencies = [
- "quote",
- "syn",
-]
-
 [[package]]
 name = "deunicode"
 version = "0.4.3"
@@ -434,15 +424,6 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da32515d9f6e6e489d7bc9d84c71b060db7247dc035bbe44eac88cf87486d8d5"
 
-[[package]]
-name = "output_vt100"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53cdc5b785b7a58c5aad8216b3dfa114df64b0b06ae6e1501cef91df2fbdf8f9"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "pathdiff"
 version = "0.2.1"
@@ -469,13 +450,11 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pretty_assertions"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a25e9bcb20aa780fd0bb16b72403a9064d6b3f22f026946029acb941a50af755"
+checksum = "af7cee1a6c8a5b9208b3cb1061f10c0cb689087b3d8ce85fb9d2dd7a29b6ba66"
 dependencies = [
- "ctor",
  "diff",
- "output_vt100",
  "yansi",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 72ec767..9472f4a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,7 +42,7 @@ snafu = "0.7.3"
 unicode-normalization = "0.1.22"
 
 [dev-dependencies]
-pretty_assertions = "1.3.0"
+pretty_assertions = "1.4.0"
 rstest = "0.16.0"
 tempfile = "3.3.0"
 walkdir = "2.3.2"