diff --git a/Makefile b/Makefile
index 14825bf..8baafb1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Generated by Medikit 0.4a10 on 2017-11-01.
+# Generated by Medikit 0.4a10 on 2017-11-02.
 # All changes will be overriden.
 
 PACKAGE ?= bonobo
diff --git a/Projectfile b/Projectfile
index 3a48797..a91bfe5 100644
--- a/Projectfile
+++ b/Projectfile
@@ -42,7 +42,7 @@ python.setup(
 python.add_requirements(
     'fs >=2.0,<2.1',
     'jinja2 >=2.9,<2.10',
-    'mondrian >=0.3,<0.4',
+    'mondrian ==0.4a0',
     'packaging >=16,<17',
     'psutil >=5.4,<6.0',
     'requests >=2.0,<3.0',
diff --git a/requirements.txt b/requirements.txt
index 35ab601..82f5cdb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ fs==2.0.12
 idna==2.6
 jinja2==2.9.6
 markupsafe==1.0
-mondrian==0.3.0
+mondrian==0.4a0
 packaging==16.8
 pbr==3.1.1
 psutil==5.4.0
diff --git a/setup.py b/setup.py
index 9bfecb1..219e0e6 100644
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,7 @@ setup(
     packages=find_packages(exclude=['ez_setup', 'example', 'test']),
     include_package_data=True,
     install_requires=[
-        'colorama (>= 0.3)', 'fs (>= 2.0, < 2.1)', 'jinja2 (>= 2.9, < 2.10)', 'mondrian (>= 0.3, < 0.4)',
+        'colorama (>= 0.3)', 'fs (>= 2.0, < 2.1)', 'jinja2 (>= 2.9, < 2.10)', 'mondrian (== 0.4a0)',
         'packaging (>= 16, < 17)', 'psutil (>= 5.4, < 6.0)', 'requests (>= 2.0, < 3.0)', 'stevedore (>= 1.27, < 1.28)'
     ],
     extras_require={