diff --git a/Cargo.toml b/Cargo.toml
index bc0109a2ff..d580d4b8ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,5 +54,5 @@ cargo_miri = ["cargo_metadata", "directories", "rustc_version"]
 rustc_tests = []
 
 [dev-dependencies]
-compiletest_rs = { version = "=0.3.19", features = ["tmp", "stable"] }
+compiletest_rs = { version = "0.3.21", features = ["tmp", "stable"] }
 colored = "1.6"