diff --git a/.travis.yml b/.travis.yml
index b03efa6..9aa5388 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,6 +33,14 @@ jobs:
   - { stage: lint, python: 3.7, env: TOXENV=pylint }
   - { stage: lint, python: 3.7, env: TOXENV=bandit }
   - { stage: lint, python: 3.7, env: TOXENV=readme }
+  - { stage: test, python: 3.7, env: TOKENV=pysnooper }
+  - { stage: test, python: 3.6, env: TOKENV=pysnooper }
+  - { stage: test, python: 3.5, env: TOKENV=pysnooper }
+  - { stage: test, python: 3.4, env: TOKENV=pysnooper }
+  - { stage: test, python: 2.7, env: TOKENV=pysnooper }
+  - { stage: test, python: 3.8-dev, env: TOKENV=pysnooper }
+  - { stage: test, python: pypy2.7-6.0, env: TOKENV=pysnooper }
+  - { stage: test, python: pypy3.5, env: TOKENV=pysnooper }
 
   - stage: deploy
     install: skip
diff --git a/tox.ini b/tox.ini
index 94e91ca..ff866c4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ envlist =
     flake8
     pylint
     bandit
+    pysnooper
     py{27,34,35,36,37,38,py,py3}
     readme
     requirements
@@ -16,6 +17,7 @@ description = Unit tests
 deps =
     pytest
     python_toolbox
+    pysnooper
 commands = pytest
 setenv =
     # until python_toolbox is fixed
@@ -54,6 +56,13 @@ deps = pip-tools
 commands = pip-compile --output-file requirements.txt requirements.in
 changedir = {toxinidir}
 
+[testenv:pysnooper]
+description = Ensure pip installs pysnooper
+deps = pip
+commands =
+    pip install pysnooper
+    pip show pysnooper
+
 [bandit]
 exclude = .tox,build,dist,tests
 targets = .
@@ -63,3 +72,8 @@ exclude = .tox,build,dist,pysnooper.egg-info
 
 [pytest]
 addopts = --strict
+
+[pysnooper]
+commands =
+    pip install pysnooper
+    pip show pysnooper