diff --git a/Pipfile b/Pipfile
index 3b58e620f..c87b2d468 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,10 +7,10 @@ verify_ssl = true
 python_version = "3.5"
 
 [packages]
-furl = "*"
-pyyaml = "*"
-requests = "*"
-werkzeug = "*"
+furl = "==2.0.0"
+pyyaml = "==3.13"
+requests = "==2.20.0"
+werkzeug = "==0.14.1"
 
 [dev-packages]
-vcrpy = "*"
+vcrpy = "==2.0.1"
diff --git a/Pipfile.lock b/Pipfile.lock
index f2aee454c..dc88d1339 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "58ba4d066d275717a5b571cfe5195a63f95cbfec1b2a12d1ba40ecfcb6d00c6d"
+            "sha256": "86be16c12e06dc67fd9e95334532a13dec41da47cee17103e2ee74de62d00ed1"
         },
         "pipfile-spec": 6,
         "requires": {