diff --git a/tox.ini b/tox.ini
index 99a7c6da..18f043e7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,17 +4,11 @@
 # and then run "tox" from this directory.
 
 [tox]
-# deprecation warning: py{34}
+# deprecation warning: py{27,py2,34,35}
 envlist=py{27,34,35,36,37,38,39,py2,py3}{,-tf}{,-keras}, perf, setup.py
 isolated_build=True
 
-[coverage]
-commands=
-    - coveralls
-    codecov -X pycov -e TOXENV
-    - codacy report -l Python -r coverage.xml --partial
-
-[extra]
+[core]
 deps=
     pytest
     pytest-cov
@@ -24,14 +18,14 @@ deps=
     coveralls
     codecov
 commands=
-    pytest --cov=tqdm --cov-report=xml --cov-report=term -k "not perf"
-    {[coverage]commands}
-allowlist_externals=codacy
+    - coveralls
+    codecov -X pycov -e TOXENV
+    - codacy report -l Python -r coverage.xml --partial
 
 [testenv]
-passenv=CI GITHUB_* TOXENV CODECOV_* COVERALLS_* CODACY_* HOME
+passenv=TOXENV CI GITHUB_* CODECOV_* COVERALLS_* CODACY_* HOME
 deps=
-    {[extra]deps}
+    {[core]deps}
     cython
     matplotlib
     numpy
@@ -39,17 +33,19 @@ deps=
     keras: keras
     py{36,37,38,39}: rich
     tf: tensorflow
-commands={[extra]commands}
-allowlist_externals={[extra]allowlist_externals}
+commands=
+    pytest --cov=tqdm --cov-report=xml --cov-report=term -k "not perf"
+    {[core]commands}
+allowlist_externals=codacy
 
 [testenv:py{27,py2}{,-tf}{,-keras}]
 commands=
     pytest --cov=tqdm --cov-report=xml --cov-report=term -k "not perf" -o addopts= -v --tb=short -rxs -W=error --durations=10
-    {[coverage]commands}
+    {[core]commands}
 
 # no cython/numpy/pandas
 [testenv:py{34,py2,py3}]
-deps={[extra]deps}
+deps={[core]deps}
 
 [testenv:perf]
 deps=