diff --git a/Cargo.lock b/Cargo.lock
index 77b57cc..01db724 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1052,9 +1052,9 @@ checksum = "c36fa947111f5c62a733b652544dd0016a43ce89619538a8ef92724a6f501a20"
 
 [[package]]
 name = "pretty_assertions"
-version = "0.7.2"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cab0e7c02cf376875e9335e0ba1da535775beb5450d21e1dffca068818ed98b"
+checksum = "ec0cfe1b2403f172ba0f234e500906ee0a3e493fb81092dac23ebefe129301cc"
 dependencies = [
  "ansi_term 0.12.1",
  "ctor",
diff --git a/Cargo.toml b/Cargo.toml
index db5fbff..fa3a752 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ atty = "0.2.14"
 encoding_rs_io = "0.1.7"
 
 [dev-dependencies]
-pretty_assertions = "0.7.2"
+pretty_assertions = "1.0.0"
 duct = "0.13.5"
 test-env-log = "0.2.7"
 shell-escape = "0.1.5"