diff --git a/requirements.txt b/requirements.txt
index f2fcac3ab..923665a2c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,10 @@
-certifi==2018.10.15
-chardet==3.0.4
-furl==2.0.0
-idna==2.7
-orderedmultidict==1.0
-pyyaml==3.13
-requests==2.20.0
-six==1.11.0
-urllib3==1.24.1
-werkzeug==0.14.1
+certifi==2018.10.15 --hash=sha256:a5471c55b011bd45d6155f5c3629310c1d2f1e1a5a899b7e438a223343de583d
+chardet==3.0.4 --hash=sha256:9f178988ca4c86e8a319b51aac1185b6fe5192328eb5a163c286f4bf50b7b3d8
+furl==2.0.0 --hash=sha256:cc0eb8998dcc7c5b58bc8625891a9ff563e2765e112024fa3d1e3521481de8b6
+idna==2.7 --hash=sha256:954e65e127d0433a352981f43f291a438423d5b385ebf643c70fd740e0634111
+orderedmultidict==1.0 --hash=sha256:25489716d76d2cc8aa656bfb00cd40b6ca29d5e11ccde0db60c2b46ad52bb40a
+pyyaml==3.13 --hash=sha256:59fa6f097310e25248d5aa1d7b7e619ea22dfaada67e9c65262457b3e5b3a5c8
+requests==2.20.0 --hash=sha256:2a539dd6af40a611f3b8eb3f99d3567781352ece1698b2fab42bf4c2218705b5
+six==1.11.0 --hash=sha256:4663c7a1dbed033cfb294f2d534bd6151c0698dc12ecabb4eaa3cb041d758528
+urllib3==1.24.1 --hash=sha256:ac4755b0ae019d670d5fb420c39cb531389ab6ca8b652e12f56259f5cbc0ce21
+werkzeug==0.14.1 --hash=sha256:177ea4248bf0475cbc060edb35a0bdcf6e6daeac9e1296de5ddb3493e5ec15b9