diff --git a/.travis.yml b/.travis.yml
index 763d2ef..d4d7f04 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ python:
   - "3.5"
   - "3.6"
   - "pypy3"
+  - "pypy5"
 install:
   - pip install codecov pytest-cov
   - nvm install 8
diff --git a/texrrow/core/utils/environ.py b/texrrow/core/utils/environ.py
index 64d50b6..879e224 100644
--- a/texrrow/core/utils/environ.py
+++ b/texrrow/core/utils/environ.py
@@ -11,7 +11,7 @@ def getenv_or_raise(name, error_message):
     except KeyError as exc:
         exc_value = KeyError(error_message)
         raise_from(exc_value, exc)
-        raise exc_value
+        raise exc_value  # pragma: no cover
 
 
 def getenv_int(name, default=None):