diff --git a/.travis.yml b/.travis.yml
index 16ac271..fba58ab 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@ before_install:
 install:
   - pip install $DJANGO
   - pip install -r requirements-dev.txt
-  - pip install coveralls
+  - pip install coveralls==1.1  # travis pypy not compatible with later versions
   - pip freeze
 
 # command to run tests, e.g. python setup.py test
diff --git a/AUTHORS.rst b/AUTHORS.rst
index 6754498..e21bedc 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -11,3 +11,4 @@ Contributors
 
 * João Neto - https://github.com/netjinho
 * Jorik Kraaikamp - https://github.com/JostCrow
+* Håken Lid - https://github.com/haakenlid
diff --git a/requirements.txt b/requirements.txt
index 6316f9f..3507dae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 cached-property
 Django>=1.8
-enum34
+enum-compat
 six