diff --git a/Cargo.toml b/Cargo.toml
index ebf38a5..08ef0fa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ markdown-it =  { version = "0.6", default-features = false }
 regex       = ">= 1.0.0, < 2"
 once_cell   = ">= 1.0.1, < 2"
 testing     = "0.33"
-rstest      = "0.17"
+rstest      = "0.18"
 # possible other packages for testing that are not actually used currently
 # indoc, rtest, insta