diff --git a/.travis/requirements-latest.txt b/.travis/requirements-latest.txt
index 15dd8936f..58bd132ef 100644
--- a/.travis/requirements-latest.txt
+++ b/.travis/requirements-latest.txt
@@ -4,3 +4,6 @@ twisted
 boto
 Pillow
 django
+
+# testing requirements
+mock
diff --git a/.travis/requirements-lucid.txt b/.travis/requirements-lucid.txt
index d55b57799..70be4045c 100644
--- a/.travis/requirements-lucid.txt
+++ b/.travis/requirements-lucid.txt
@@ -4,3 +4,6 @@ lxml==2.2.4
 twisted==10.0.0
 boto==1.9b
 Pillow<2.0
+
+# testing requirements
+mock==1.0.1
diff --git a/.travis/requirements-precise.txt b/.travis/requirements-precise.txt
index 625708aa2..918dfdc45 100644
--- a/.travis/requirements-precise.txt
+++ b/.travis/requirements-precise.txt
@@ -5,3 +5,6 @@ twisted==11.1.0
 boto==2.2.2
 Pillow<2.0
 django==1.3.1
+
+# testing requirements
+mock==1.0.1