diff --git a/Project.toml b/Project.toml
index eabbbac1..4d2022b9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "OptimalControlProblems"
 uuid = "59046045-fb9c-4c23-964f-ff0a25704f96"
 authors = ["Olivier Cots <olivier.cots@toulouse-inp.fr>"]
-version = "0.3.3"
+version = "0.4.0"
 
 [deps]
 ADNLPModels = "54578032-b7ea-4c30-94aa-7cbd1cce6c9a"
diff --git a/src/OptimalControlProblems.jl b/src/OptimalControlProblems.jl
index 30c8b055..462985c1 100644
--- a/src/OptimalControlProblems.jl
+++ b/src/OptimalControlProblems.jl
@@ -63,7 +63,15 @@ function make_list_of_problems()
 
     # exclude the following problems
     problems_to_exclude = [
-        :bioreactor, :cart_pendulum, :dielectrophoretic_particle, :moonlander
+        :bioreactor, 
+        :cart_pendulum, 
+        :dielectrophoretic_particle, 
+        :moonlander, 
+        :ducted_fan,
+        :insurance,
+        :robot,
+        :space_shuttle,
+        :steering,
     ]
     list_of_problems = setdiff(list_of_problems, problems_to_exclude)
 
diff --git a/test/runtests.jl b/test/runtests.jl
index 84180e87..b329aa3f 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -31,11 +31,11 @@ problems_to_exclude = [
     # :cart_pendulum, # no need to remove here since already removed in OptimalControlProblems.jl
     # :dielectrophoretic_particle, # no need to remove here since already removed in OptimalControlProblems.jl
     # :moonlander, # no need to remove here since already removed in OptimalControlProblems.jl
-    :ducted_fan,
-    :insurance,
-    :robot,
-    :space_shuttle,
-    :steering,
+    # :ducted_fan,
+    # :insurance,
+    # :robot,
+    # :space_shuttle,
+    # :steering,
 ]
 list_of_problems = setdiff(list_of_problems, problems_to_exclude)