diff --git a/.ci/travis/install.sh b/.ci/travis/install.sh
index e70ca477..7a8b35da 100755
--- a/.ci/travis/install.sh
+++ b/.ci/travis/install.sh
@@ -16,6 +16,7 @@ if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
 fi
 
 pip install --upgrade pip
-pip install wheel coverage==3.7.1 python-coveralls mock
+pip install --upgrade setuptools
+pip install -r requirements_test.txt
 python setup.py develop
 pip freeze
diff --git a/.ci/travis/test.sh b/.ci/travis/test.sh
index dbff0667..d922fc5c 100755
--- a/.ci/travis/test.sh
+++ b/.ci/travis/test.sh
@@ -2,15 +2,18 @@
 
 if [[ "$READTHEDOCS" == "1" ]]; then
     make -C docs html
-fi
-
-if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
-    if which pyenv > /dev/null; then
-        eval "$(pyenv init -)"
+else
+    if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
+        if which pyenv > /dev/null; then
+            eval "$(pyenv init -)"
+        fi
+        pyenv activate virtualenv
+        coverage run --branch $VIRTUAL_ENV/bin/trial tests
+    else
+        coverage run --branch `which trial` tests/
     fi
-    pyenv activate virtualenv
-    coverage run --branch $VIRTUAL_ENV/bin/trial tests
 
-else
-    coverage run --branch `which trial` tests/
+    # Upload code coverage to codecov.io
+    coverage xml
+    codecov --required
 fi
diff --git a/.travis.yml b/.travis.yml
index 3f42ce7c..85145f19 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,3 @@ install:
 
 script:
   - ./.ci/travis/test.sh
-
-after_success:
-  - coveralls
diff --git a/README.rst b/README.rst
index eb6d5191..ee04ab1a 100644
--- a/README.rst
+++ b/README.rst
@@ -83,6 +83,7 @@ checkout the configuration files used to run the tests on Travis and Appveyor:
 
     virtualenv env
     . env/bin/activate
+    pip install -r requirements_test.txt
     pip install -e . --egg
     trial tests
 
@@ -90,7 +91,7 @@ checkout the configuration files used to run the tests on Travis and Appveyor:
 
     virtualenv env
     env\Scripts\activate
-    %VIRTUALE_ENV%\Scripts\pip.exe install wheel
+    %VIRTUALE_ENV%\Scripts\pip.exe -r requirements_test.txt
     %VIRTUALE_ENV%\Scripts\pip.exe install -e . --egg
     %VIRTUALE_ENV%\Scripts\python.exe %VIRTUALE_ENV%\Scripts\trial.py tests
 
diff --git a/appveyor.yml b/appveyor.yml
index 615b0c77..dbccda22 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,7 +20,7 @@ clone_folder: c:\\project
 test_script:
   - ps: cd C:\\project
 
-  - "%WITH_COMPILER% %PYTHON%\\Scripts\\pip.exe install wheel mock coverage"
+  - "%WITH_COMPILER% %PYTHON%\\Scripts\\pip.exe install -r C:\\project\\requirements_test.txt"
   - "%WITH_COMPILER% %PYTHON%\\Scripts\\pip.exe install ."
 
   # Twisted's trial does not build entrypoints on Windows so we have
@@ -29,7 +29,9 @@ test_script:
 
 after_test:
   - "%WITH_COMPILER% %PYTHON%\\python.exe setup.py bdist_wheel"
-  - "%PYTHON%\\Scripts\\coverage.exe report"
+  - "%PYTHON%\\Scripts\\coverage.exe xml"
+  - "%PYTHON%\\Scripts\\codecov.exe --required"
 
 artifacts:
-  - path: dist\*
+  - path: dist\.whl
+  - path: .coverage
diff --git a/requirements_test.txt b/requirements_test.txt
new file mode 100644
index 00000000..f1b3a9fb
--- /dev/null
+++ b/requirements_test.txt
@@ -0,0 +1,4 @@
+codecov
+coverage==3.7.1
+mock
+wheel