diff --git a/requirements.dev.txt b/requirements.dev.txt
index 38f0acc0..aeaad9b4 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -1,3 +1,8 @@
+coverage>=4.0.3
+nose>=1.3.7
+pluggy>=0.3.1
+py>=1.4.31
+randomize>=0.13
 
 pytest
 pytest-runner
diff --git a/requirements.txt b/requirements.txt
index b28b04f6..8571fe56 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,13 @@
+coverage>=4.0.3
+nose>=1.3.7
+pluggy>=0.3.1
+py>=1.4.31
+randomize>=0.13
 
+pytest
+pytest-runner
+tox
+tox-pyenv
+wheel