diff --git a/Pipfile.lock b/Pipfile.lock
index 991a0e4..6e9610a 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -13,7 +13,32 @@
     },
     "default": {
         "lxml": {
-            "version": "==3.8.0"
+            "hashes": [
+                "sha256:0aa44ffdeaaf6ba45d61980bb2c07e87d4dcac7a8b5b9d458124bc1adcda5233",
+                "sha256:124a9d529eec5e10f307eb237df3efc43dd1fb7ebdb5da5e480c4ed372648b6b",
+                "sha256:1d1e45584353e4d563685874707fc8c85cdd11b0ef3b79d77bb38046134d68a9",
+                "sha256:2812bc45a7f53f366217b76a1c53e6728fbfa7f7524d16a321ea8f7131428bd1",
+                "sha256:29697224b2df76edf7c2de9bcd90a26dd28fe85c5fd7f0171cae84f8383b227e",
+                "sha256:36ffb216e2f361a5a0a7e219aea6cd44da11c64061baed273944aae21223186c",
+                "sha256:4626d699551f66687e5f7e7f9b79bfce611e12edebfb9fec276e2df8ec46541e",
+                "sha256:4c21d7304d37715e6aed756e4d0c374c99c9bb1fa8d64f546b95474b17ac23de",
+                "sha256:57be98177ce784495dff53f40620995ad0a56456246ed9d51977e595de58e12e",
+                "sha256:62bfcd0629991e1c1257ffd28df2ab31a5c44da4c06823c26ec0f472723a84ca",
+                "sha256:71ac6dac6835de75aaf531cae9ffa447dae0783ba1f43bf6eaccfad3680a5b9c",
+                "sha256:7769ac9203ebe6d8db16904c54d57d77360fcc1926ed7afaa86b04050e4afa5b",
+                "sha256:7d96fbb5f23a62300aa9bef7d286cd61aca8902357619c8708c0290aba5df73f",
+                "sha256:8f52c4c8f1cf15419193026e731f34a3260a3ce7977b875ba1eb2517b8a3f660",
+                "sha256:95b82fdfdaac71640b281da6b9a2c3700177ba5190a786881b184de744ad55de",
+                "sha256:988d55112f196e12341b7c5138841c2b4f21f871eaa8f138c6ac4c46f28899f9",
+                "sha256:9e08918b744b89d30750eca8598f37ae75b16202870db678fde970d85afed3e3",
+                "sha256:b46f31e806f6884bd1053ad1d78ecaca6d1bc5dd94a1b783a6ff0bb4b3a60962",
+                "sha256:cef79715f2335bfc1ef7082bcb8b2bac87271431653455221a9127fde146208c",
+                "sha256:cf63f590090404c52f179b7ceacb7cd549de3a1697bcfe2f79be180b2801d109",
+                "sha256:d06260e6102b2f18dbee3736185cd6a2e1c88c0fad782bf8e9d7a7a1b24e02b0",
+                "sha256:dd98d4f88ce0abda2b02c1542d1de22dd342023f3ba09874bd95841283f29433",
+                "sha256:f04b184984c23e0caac3c55eac2fe2dbb88726a5a1b35e23715eff6f29a4705c"
+            ],
+            "version": "==4.2.0"
         },
         "psycopg2": {
             "version": "==2.7.1"