diff --git a/Pipfile.lock b/Pipfile.lock
index e33e00a..e8e90c2 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -18,10 +18,10 @@
     "default": {
         "certifi": {
             "hashes": [
-                "sha256:47f9c83ef4c0c621eaef743f133f09fa8a74a9b75f037e8624f83bd1b6626cb7",
-                "sha256:993f830721089fef441cdfeb4b2c8c9df86f0c63239f06bd025a76a7daddb033"
+                "sha256:e4f3620cfea4f83eedc95b24abd9cd56f3c4b146dd0177e83a21b4eb49e21e50",
+                "sha256:fd7c7c74727ddcf00e9acd26bba8da604ffec95bf1c2144e67aff7a8b50e6cef"
             ],
-            "version": "==2018.11.29"
+            "version": "==2019.9.11"
         },
         "chardet": {
             "hashes": [
@@ -47,39 +47,36 @@
         },
         "nltk": {
             "hashes": [
-                "sha256:286f6797204ffdb52525a1d21ec0a221ec68b8e3fa4f2d25f412ac8e63c70e8d",
-                "sha256:e51590c0bf2d9dcb7ce088b03e4f42c94e7cdd2a372c724320dfa8b19de77609"
+                "sha256:bed45551259aa2101381bbdd5df37d44ca2669c5c3dad72439fa459b29137d94"
             ],
             "index": "pypi",
-            "version": "==3.4"
+            "version": "==3.4.5"
         },
         "numpy": {
             "hashes": [
-                "sha256:0cdbbaa30ae69281b18dd995d3079c4e552ad6d5426977f66b9a2a95f11f552a",
-                "sha256:2b0cca1049bd39d1879fa4d598624cafe82d35529c72de1b3d528d68031cdd95",
-                "sha256:31d3fe5b673e99d33d70cfee2ea8fe8dccd60f265c3ed990873a88647e3dd288",
-                "sha256:34dd4922aab246c39bf5df03ca653d6265e65971deca6784c956bf356bca6197",
-                "sha256:384e2dfa03da7c8d54f8f934f61b6a5e4e1ebb56a65b287567629d6c14578003",
-                "sha256:392e2ea22b41a22c0289a88053204b616181288162ba78e6823e1760309d5277",
-                "sha256:4341a39fc085f31a583be505eabf00e17c619b469fef78dc7e8241385bfddaa4",
-                "sha256:45080f065dcaa573ebecbfe13cdd86e8c0a68c4e999aa06bd365374ea7137706",
-                "sha256:485cb1eb4c9962f4cd042fed9424482ec1d83fee5dc2ef3f2552ac47852cb259",
-                "sha256:575cefd28d3e0da85b0864506ae26b06483ee4a906e308be5a7ad11083f9d757",
-                "sha256:62784b35df7de7ca4d0d81c5b6af5983f48c5cdef32fc3635b445674e56e3266",
-                "sha256:69c152f7c11bf3b4fc11bc4cc62eb0334371c0db6844ebace43b7c815b602805",
-                "sha256:6ccfdcefd287f252cf1ea7a3f1656070da330c4a5658e43ad223269165cdf977",
-                "sha256:7298fbd73c0b3eff1d53dc9b9bdb7add8797bb55eeee38c8ccd7906755ba28af",
-                "sha256:79463d918d1bf3aeb9186e3df17ddb0baca443f41371df422f99ee94f4f2bbfe",
-                "sha256:8bbee788d82c0ac656536de70e817af09b7694f5326b0ef08e5c1014fcb96bb3",
-                "sha256:a863957192855c4c57f60a75a1ac06ce5362ad18506d362dd807e194b4baf3ce",
-                "sha256:ae602ba425fb2b074e16d125cdce4f0194903da935b2e7fe284ebecca6d92e76",
-                "sha256:b13faa258b20fa66d29011f99fdf498641ca74a0a6d9266bc27d83c70fea4a6a",
-                "sha256:c2c39d69266621dd7464e2bb740d6eb5abc64ddc339cc97aa669f3bb4d75c103",
-                "sha256:e9c88f173d31909d881a60f08a8494e63f1aff2a4052476b24d4f50e82c47e24",
-                "sha256:f1a29267ac29fff0913de0f11f3a9edfcd3f39595f467026c29376fad243ebe3",
-                "sha256:f69dde0c5a137d887676a8129373e44366055cf19d1b434e853310c7a1e68f93"
+                "sha256:0b0dd8f47fb177d00fa6ef2d58783c4f41ad3126b139c91dd2f7c4b3fdf5e9a5",
+                "sha256:25ffe71f96878e1da7e014467e19e7db90ae7d4e12affbc73101bcf61785214e",
+                "sha256:26efd7f7d755e6ca966a5c0ac5a930a87dbbaab1c51716ac26a38f42ecc9bc4b",
+                "sha256:28b1180c758abf34a5c3fea76fcee66a87def1656724c42bb14a6f9717a5bdf7",
+                "sha256:2e418f0a59473dac424f888dd57e85f77502a593b207809211c76e5396ae4f5c",
+                "sha256:30c84e3a62cfcb9e3066f25226e131451312a044f1fe2040e69ce792cb7de418",
+                "sha256:4650d94bb9c947151737ee022b934b7d9a845a7c76e476f3e460f09a0c8c6f39",
+                "sha256:4dd830a11e8724c9c9379feed1d1be43113f8bcce55f47ea7186d3946769ce26",
+                "sha256:4f2a2b279efde194877aff1f76cf61c68e840db242a5c7169f1ff0fd59a2b1e2",
+                "sha256:62d22566b3e3428dfc9ec972014c38ed9a4db4f8969c78f5414012ccd80a149e",
+                "sha256:669795516d62f38845c7033679c648903200980d68935baaa17ac5c7ae03ae0c",
+                "sha256:75fcd60d682db3e1f8fbe2b8b0c6761937ad56d01c1dc73edf4ef2748d5b6bc4",
+                "sha256:9395b0a41e8b7e9a284e3be7060db9d14ad80273841c952c83a5afc241d2bd98",
+                "sha256:9e37c35fc4e9410093b04a77d11a34c64bf658565e30df7cbe882056088a91c1",
+                "sha256:a0678793096205a4d784bd99f32803ba8100f639cf3b932dc63b21621390ea7e",
+                "sha256:b46554ad4dafb2927f88de5a1d207398c5385edbb5c84d30b3ef187c4a3894d8",
+                "sha256:c867eeccd934920a800f65c6068acdd6b87e80d45cd8c8beefff783b23cdc462",
+                "sha256:dd0667f5be56fb1b570154c2c0516a528e02d50da121bbbb2cbb0b6f87f59bc2",
+                "sha256:de2b1c20494bdf47f0160bd88ed05f5e48ae5dc336b8de7cfade71abcc95c0b9",
+                "sha256:f1df7b2b7740dd777571c732f98adb5aad5450aee32772f1b39249c8a50386f6",
+                "sha256:ffca69e29079f7880c5392bf675eb8b4146479d976ae1924d01cd92b04cccbcc"
             ],
-            "version": "==1.16.1"
+            "version": "==1.17.3"
         },
         "pandas": {
             "hashes": [
@@ -116,10 +113,10 @@
         },
         "pytz": {
             "hashes": [
-                "sha256:32b0891edff07e28efe91284ed9c31e123d84bea3fd98e1f72be2508f43ef8d9",
-                "sha256:d5f05e487007e29e03409f9398d074e158d920d36eb82eaf66fb1136b0c5374c"
+                "sha256:1c557d7d0e871de1f5ccd5833f60fb2550652da6be2693c1e02300743d21500d",
+                "sha256:b02c06db6cf09c12dd25137e563b31700d3b80fcc4ad23abb7a315f2789819be"
             ],
-            "version": "==2018.9"
+            "version": "==2019.3"
         },
         "requests": {
             "hashes": [
@@ -129,13 +126,6 @@
             "index": "pypi",
             "version": "==2.21.0"
         },
-        "singledispatch": {
-            "hashes": [
-                "sha256:5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c",
-                "sha256:833b46966687b3de7f438c761ac475213e53b306740f1abfaa86e1d1aae56aa8"
-            ],
-            "version": "==3.4.0.3"
-        },
         "six": {
             "hashes": [
                 "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
@@ -153,10 +143,10 @@
         },
         "urllib3": {
             "hashes": [
-                "sha256:61bf29cada3fc2fbefad4fdf059ea4bd1b4a86d2b6d15e1c7c0b582b9752fe39",
-                "sha256:de9529817c93f27c8ccbfead6985011db27bd0ddfcdb2d86f3f663385c6a9c22"
+                "sha256:2393a695cd12afedd0dcb26fe5d50d0cf248e5a66f75dbd89a3d4eb333a61af4",
+                "sha256:a637e5fae88995b256e3409dc4d52c2e2e0ba32c42a6365fee8bbd2238de3cfb"
             ],
-            "version": "==1.24.1"
+            "version": "==1.24.3"
         }
     },
     "develop": {}