diff --git a/test/Project.toml b/test/Project.toml
index af7177f..578aaa8 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -17,7 +17,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 [compat]
 Aqua = "0.8"
 BenchmarkTools = "1"
-CTBase = "0.18"
+CTBase = "0.17"
 CTModels = "0.8"
 CUDA = "5"
 ExaModels = "0.9"