diff --git a/Cargo.lock b/Cargo.lock
index 10fc4661..cd1a1dcf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -108,16 +108,6 @@ version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
 
-[[package]]
-name = "ctor"
-version = "0.1.26"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d2301688392eb071b0bf1a37be05c469d3cc4dbbd95df672fe28ab021e6a096"
-dependencies = [
- "quote",
- "syn 1.0.107",
-]
-
 [[package]]
 name = "cxx"
 version = "1.0.93"
@@ -385,15 +375,6 @@ version = "1.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
 
-[[package]]
-name = "output_vt100"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "628223faebab4e3e40667ee0b2336d34a5b960ff60ea743ddfdbcf7770bcfb66"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "paste"
 version = "1.0.11"
@@ -408,13 +389,11 @@ checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
 
 [[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/serde_with/Cargo.toml b/serde_with/Cargo.toml
index 8cc3e411..be1d5a8b 100644
--- a/serde_with/Cargo.toml
+++ b/serde_with/Cargo.toml
@@ -77,7 +77,7 @@ expect-test = "1.3.0"
 fnv = "1.0.6"
 glob = "0.3.0"
 mime = "0.3.16"
-pretty_assertions = "1.0.0"
+pretty_assertions = "1.4.0"
 regex = {version = "1.8.1", default-features = false, features = ["std"]}
 rmp-serde = "1.1.0"
 ron = "0.8"
diff --git a/serde_with_macros/Cargo.toml b/serde_with_macros/Cargo.toml
index 3dd837fa..58cf1a4a 100644
--- a/serde_with_macros/Cargo.toml
+++ b/serde_with_macros/Cargo.toml
@@ -44,7 +44,7 @@ version = "2.0.0"
 
 [dev-dependencies]
 expect-test = "1.4.0"
-pretty_assertions = "1.0.0"
+pretty_assertions = "1.4.0"
 rustversion = "1.0.0"
 serde = {version = "1.0.157", features = ["derive"]}
 serde_json = "1.0.25"