diff --git a/Cargo.toml b/Cargo.toml
index 41139de..ec94f3d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,6 +38,6 @@ default = ["blocking"]
 blocking = []
 
 [dev-dependencies]
-test-case = "1.2.0"
+test-case = "3.1.0"
 tempfile = "3.2.0"
 async-std = { version = "1.10.0", features = ["attributes"] }