diff --git a/tox.ini b/tox.ini
index 96ba9b5..8bd1caa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37
+envlist = py35,py36,py37
 requires = tox-conda
 
 [testenv]
@@ -26,11 +26,9 @@ whitelist_externals =
     cmd
 conda_channels =
     conda-forge
-extras =
-    dev
 commands =
     python build_gui.py
-    pip install .[dev]
+    pip install .
     python -m nuitka --plugin-enable=multiprocessing --remove-output --plugin-enable=qt-plugins --standalone --assume-yes-for-downloads --follow-imports --output-dir=exe ed_lrr_gui\__main__.py
     cmd /c rename exe\__main__.dist\__main__.exe ED_LRR.exe
-    iscc /QP installer/ED_LRR.iss
\ No newline at end of file
+    iscc /F"ED_LRR_{envname}" /Qp installer/ED_LRR.iss
\ No newline at end of file