diff --git a/setup.py b/setup.py
index 2c6f39a..5903577 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
 ]
 
 INSTALL_REQUIRES = [
-    'Orange3 >=3.24.0',
+    'Orange3 >=3.27.0',
     'BeautifulSoup4',
     'numpy'
 ]
diff --git a/tox.ini b/tox.ini
index b7bf4e8..6017af0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,12 +27,7 @@ deps =
     pyqt5==5.12.*
     pyqtwebengine==5.12.*
     oldest: scikit-learn~=0.22.0
-    oldest: orange3==3.25.0
-    # Use newer canvas-core and widget-base to avoid segfaults on windows
-    oldest: orange-canvas-core==0.1.9 ; sys_platform != 'win32'
-    oldest: orange-canvas-core==0.1.15 ; sys_platform == 'win32'
-    oldest: orange-widget-base==4.5.0 ; sys_platform != 'win32'
-    oldest: orange-widget-base==4.9.0 ; sys_platform == 'win32'
+    oldest: orange3==3.27.0
     latest: git+git://github.com/biolab/orange3.git#egg=orange3
     latest: git+git://github.com/biolab/orange-canvas-core.git#egg=orange-canvas-core
     latest: git+git://github.com/biolab/orange-widget-base.git#egg=orange-widget-base