diff --git a/docs/Project.toml b/docs/Project.toml
index cd40d4a03..f476b528f 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -37,7 +37,7 @@ UnoSolver = "1baa60ac-02f7-4b39-a7a8-2f4f58486b05"
 ADNLPModels = "0.8"
 CTBase = "0.30"
 CTDirect = "1"
-CTFlows = "0.18"
+CTFlows = "0.18, 0.17"
 CTLie = "0.2"
 CTModels = "0.19"
 CTParser = "0.9"