diff --git a/Project.toml b/Project.toml
index b10cf590..3371fd70 100644
--- a/Project.toml
+++ b/Project.toml
@@ -28,7 +28,7 @@ ADNLPModels = "0.8"
 BenchmarkTools = "1"
 CTBase = "0.28"
 CTDirect = "1"
-CTFlows = "0.16"
+CTFlows = "0.16, 0.8"
 CTLie = "0.1"
 CTModels = "0.15"
 CTParser = "0.8"