diff --git a/requirements.txt b/requirements.txt
index 5cabc25..99d56bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-requests
-furl
\ No newline at end of file
+requests==2.18.1
+furl==1.0.0
\ No newline at end of file
diff --git a/requirements_test.txt b/requirements_test.txt
index 3c1ad60..1628c6c 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,2 +1,2 @@
-pytest
-requests_mock
\ No newline at end of file
+pytest==3.1.2
+requests-mock==1.3.0
\ No newline at end of file