diff --git a/requirements.txt b/requirements.txt
index 5230cd716..7f4b05b1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,10 +6,10 @@ wheel
 
 # Tests
 pytest-django==2.9
-pytest-cov
-factory-boy
+pytest-cov==2.5.1
+factory-boy==2.11.1
 
 #doc
-pelican
-pdoc
-ghp-import
+pelican==3.7.1
+pdoc==0.3.2
+ghp-import==0.5.5