diff --git a/.travis.yml b/.travis.yml
index b89e7532..7cde9668 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,11 @@ install:
 script: tox
 matrix:
         include:
+                - os: "linux"
+                  dist: "xenial"
+                  python: "3.8"
+                  script:
+                        - tox -e style
                 - os: "linux"
                   dist: "xenial"
                   python: "3.6"
diff --git a/tox.ini b/tox.ini
index 17df046d..5d49c6ee 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py36,py37,py38
+envlist = style,py36,py37,py38
 skipsdist = True
 skip_missing_interpreters = True
 
@@ -10,16 +10,25 @@ setenv =
     PYTHON="{envpython}"
 commands =
     make modules
-    flake8
     py.test core hscommon
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/requirements-extra.txt
 
+[testenv:style]
+deps =
+    {[testenv]deps}
+    flake8
+commands =
+    flake8
+
 [testenv:WINDOWS]
 deps =
     {[testenv]deps}
     -r{toxinidir}/requirements-windows.txt
+commands =
+    python build.py
+    python package.py
 
 [flake8]
 exclude = .tox,env,build,hscommon/tests,cocoalib,cocoa,help,./qt/dg_rc.py,qt/run_template.py,cocoa/run_template.py,./run.py,./pkg