diff --git a/crates/marine-test-macro-impl/Cargo.toml b/crates/marine-test-macro-impl/Cargo.toml
index 40f3740..ba2bf2f 100644
--- a/crates/marine-test-macro-impl/Cargo.toml
+++ b/crates/marine-test-macro-impl/Cargo.toml
@@ -22,7 +22,7 @@ quote = "1.0.26"
 proc-macro2 = "1.0.56"
 proc-macro-error = { version = "1.0.4", default-features = false }
 syn = { version = '1.0.109', features = ['full'] }
-thiserror = "1.0.39"
+thiserror = "1.0.40"
 static_assertions = "1.1.0"
 
 [dev-dependencies]