diff --git a/.gitignore b/.gitignore
index 4eb6529..921c647 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@
 /Uranium-3.4.1.tar.gz
 /Uranium-3.5.1.tar.gz
 /Uranium-3.6.0.tar.gz
+/Uranium-4.0.0.tar.gz
diff --git a/python-uranium-fix-wrong-import.patch b/python-uranium-fix-wrong-import.patch
deleted file mode 100644
index 099b758..0000000
--- a/python-uranium-fix-wrong-import.patch
+++ /dev/null
@@ -1,60 +0,0 @@
-diff --git a/tests/0001-Fix-wrong-import.patch b/tests/0001-Fix-wrong-import.patch
-new file mode 100644
-index 00000000..7a2f1fdc
---- /dev/null
-+++ b/tests/0001-Fix-wrong-import.patch
-@@ -0,0 +1,25 @@
-+From 4b02dee5b9ab4d73b3e710605151dc2c2cdbdc32 Mon Sep 17 00:00:00 2001
-+From: Gabriel Feron <feron.gabriel@gmail.com>
-+Date: Sat, 26 Jan 2019 12:30:14 +0100
-+Subject: [PATCH] Fix wrong import
-+
-+---
-+ tests/Settings/TestContainerRegistry.py | 2 +-
-+ 1 file changed, 1 insertion(+), 1 deletion(-)
-+
-+diff --git a/tests/Settings/TestContainerRegistry.py b/tests/Settings/TestContainerRegistry.py
-+index 9b87b16f..4b241fdf 100644
-+--- a/tests/Settings/TestContainerRegistry.py
-++++ b/tests/Settings/TestContainerRegistry.py
-+@@ -9,7 +9,7 @@ from UM.Resources import Resources
-+ from UM.Settings.DefinitionContainer import DefinitionContainer
-+ from UM.Settings.InstanceContainer import InstanceContainer
-+ from UM.Settings.ContainerStack import ContainerStack
-+-from tests.Settings.MockContainer import MockContainer
-++from MockContainer import MockContainer
-+
-+ Resources.addSearchPath(os.path.dirname(os.path.abspath(__file__)))
-+
-+--
-+2.20.1
-+
-diff --git a/tests/Settings/TestContainerRegistry.py b/tests/Settings/TestContainerRegistry.py
-index 9b87b16f..4b241fdf 100644
---- a/tests/Settings/TestContainerRegistry.py
-+++ b/tests/Settings/TestContainerRegistry.py
-@@ -9,7 +9,7 @@ from UM.Resources import Resources
- from UM.Settings.DefinitionContainer import DefinitionContainer
- from UM.Settings.InstanceContainer import InstanceContainer
- from UM.Settings.ContainerStack import ContainerStack
--from tests.Settings.MockContainer import MockContainer
-+from MockContainer import MockContainer
-
- Resources.addSearchPath(os.path.dirname(os.path.abspath(__file__)))
-
-diff --git a/tests/Settings/TestContainerStack.py b/tests/Settings/TestContainerStack.py
-index 966800a2..bc7db098 100644
---- a/tests/Settings/TestContainerStack.py
-+++ b/tests/Settings/TestContainerStack.py
-@@ -14,7 +14,7 @@ from UM.Settings.ContainerStack import InvalidContainerStackError
- from UM.Settings.DefinitionContainer import DefinitionContainer
- from UM.Settings.InstanceContainer import InstanceContainer
- from UM.Resources import Resources
--from tests.Settings.MockContainer import MockContainer
-+from MockContainer import MockContainer
-
- Resources.addSearchPath(os.path.dirname(os.path.abspath(__file__)))
-
---
-2.20.1
-
diff --git a/python-uranium.spec b/python-uranium.spec
index 9fc8bf5..9f74b91 100644
--- a/python-uranium.spec
+++ b/python-uranium.spec
@@ -1,13 +1,11 @@
 Name:           python-uranium
-Version:        3.6.0
-Release:        2%{?dist}
+Version:        4.0.0
+Release:        1%{?dist}
 Summary:        A Python framework for building desktop applications
 License:        LGPLv3+
 URL:            https://github.com/Ultimaker/Uranium
 Source0:        %{url}/archive/%{version}.tar.gz#/Uranium-%{version}.tar.gz
 
-Patch0:         %{name}-fix-wrong-import.patch
-
 BuildRequires:  python3-devel
 BuildRequires:  python3-pip
 BuildRequires:  /usr/bin/doxygen
@@ -106,6 +104,9 @@ popd
 
 
 %changelog
+* Wed Apr 03 2019 Gabriel Féron <feron.gabriel@gmail.com> - 4.0.0-1
+- Update to 4.0.0
+
 * Sat Feb 02 2019 Fedora Release Engineering <releng@fedoraproject.org> - 3.6.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild
 
diff --git a/sources b/sources
index 469f3f5..00a97d0 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (Uranium-3.6.0.tar.gz) = 41779e9cf76dff8f74252f668d1cf909c93f4f1416f75d2ed263f89fcfccfbcebce5580d8202d8d1697491139db448bbfa76e2dbc761dd24cb98030b3241e80d
+SHA512 (Uranium-4.0.0.tar.gz) = c75f929d3c263655eadc123d306cc3368fd68e4b3289fcb5ab0fb1a908511ef9f87096c82c31dedf3e15995cf64c0f04f05180348238bf9dbcddebfcc50711a4