diff --git a/Pipfile b/Pipfile
index 5dfb509..e3b7bf3 100644
--- a/Pipfile
+++ b/Pipfile
@@ -12,7 +12,7 @@ certifi = "==2017.11.5"
 chardet = "==3.0.4"
 docopt = "==0.6.2"
 idna = "==2.6"
-numpy = "==1.13.3"
+numpy = "==1.15.4"
 requests = "==2.20.1"
 scikit-learn = "==0.19.1"
 scipy = "==1.0.0"
diff --git a/Pipfile.lock b/Pipfile.lock
index 940f3f6..993eb88 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "6f91584252515088aa81b90fdfb608868fe53dddd87987cfdadc496c36ed637a"
+            "sha256": "83961c2f74d14b1020c74bead2bfef3da803a3fd30206cd6bdff0e3fff3e55e0"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -49,32 +49,37 @@
         },
         "numpy": {
             "hashes": [
-                "sha256:09b87d652c03508447d0f618e1d3ae57595acd3e0f0c11ac91bf68ed7bdb3a28",
-                "sha256:11fcbed36c101a3b9c4636e791efccba82409ebbedaba938c97be8bdddd029cc",
-                "sha256:2875e8055a1ea8d933b1c9d0f8714c0aa11c097bfadfcb8564c4d868fbf09a41",
-                "sha256:36ee86d5adbabc4fa2643a073f93d5504bdfed37a149a3a49f4dde259f35a750",
-                "sha256:479863de17f66810db00bccf35289555365da45d3b053ccf539b95ab3b9c24f6",
-                "sha256:4c767b6d9c9a071bb36ea34eb240ee5192fe0bc4c13be5e6c51e0350a30f7ac0",
-                "sha256:539345898a4ae17421c159ae2a350901a5e6ce3da8f24168c6c67b3536e13de8",
-                "sha256:62b09f3d1ea01d79c16a6642cb21599f53b9338c59971b2418a573155d2202ec",
-                "sha256:6c6feb0647380db6e1d5d49ef9fb59c42240f25fb8df8b6e82ecb436c7e0621a",
-                "sha256:7dfa5b49fb2a080bd0d39bfbcff1177bacb14fcb28c857fd65fd0c18938935de",
-                "sha256:8969c8f987f8bcc3e30c014532cfc20e4a8f86a50c361596e086310853adacb7",
-                "sha256:910e7ae5eeee8d322775187692c5c66719cd58d230fbfd57245ea3cf75716910",
-                "sha256:929928932f91082a168e36984179deddd58f8e98822ad2f33a2955d7c4eec596",
-                "sha256:9cad35b911e150f00bb8080950c7e9f172714bbd0234f5ab74b4e3e2d9288b37",
-                "sha256:b162c6b044960b4ea0f42be049ce2af1d18c60f82748f0a27bd5ad182a731bf3",
-                "sha256:b2f98838f4bbc3bf23af7e97ffcad18a2dc6bbb0726796781e02b9347af6685f",
-                "sha256:c4b1914d86c43399438518a2ac8bcba2fb64dd5a18efddded3783b9daae70933",
-                "sha256:c8dc6aa96882df6323bf9545934e37c6e05959bd789ae4b14d50509b093907aa",
-                "sha256:d29e72413b66df23c75b9b469253c823698ea2e00f58e9e0df64b7a50696e8ac",
-                "sha256:da2f47e46d7a93b73891d1981378717dc73c6ad5cc4fd23c934bfea7847fa958",
-                "sha256:e8e0e75db757e41463888939d26c8058b4ecd25e563c597e9119f512dc0ee1da",
-                "sha256:f5c9ca457057cd5e12ddab36cded8b1f38bf1f45bf550d4ca2839b11ec57f597",
-                "sha256:fa656dccfa9141774440575a6e7875d08b93f4a332eb5ae40877b26bed291c01"
-            ],
-            "index": "pypi",
-            "version": "==1.13.3"
+                "sha256:0df89ca13c25eaa1621a3f09af4c8ba20da849692dcae184cb55e80952c453fb",
+                "sha256:154c35f195fd3e1fad2569930ca51907057ae35e03938f89a8aedae91dd1b7c7",
+                "sha256:18e84323cdb8de3325e741a7a8dd4a82db74fde363dce32b625324c7b32aa6d7",
+                "sha256:1e8956c37fc138d65ded2d96ab3949bd49038cc6e8a4494b1515b0ba88c91565",
+                "sha256:23557bdbca3ccbde3abaa12a6e82299bc92d2b9139011f8c16ca1bb8c75d1e95",
+                "sha256:24fd645a5e5d224aa6e39d93e4a722fafa9160154f296fd5ef9580191c755053",
+                "sha256:36e36b6868e4440760d4b9b44587ea1dc1f06532858d10abba98e851e154ca70",
+                "sha256:3d734559db35aa3697dadcea492a423118c5c55d176da2f3be9c98d4803fc2a7",
+                "sha256:416a2070acf3a2b5d586f9a6507bb97e33574df5bd7508ea970bbf4fc563fa52",
+                "sha256:4a22dc3f5221a644dfe4a63bf990052cc674ef12a157b1056969079985c92816",
+                "sha256:4d8d3e5aa6087490912c14a3c10fbdd380b40b421c13920ff468163bc50e016f",
+                "sha256:4f41fd159fba1245e1958a99d349df49c616b133636e0cf668f169bce2aeac2d",
+                "sha256:561ef098c50f91fbac2cc9305b68c915e9eb915a74d9038ecf8af274d748f76f",
+                "sha256:56994e14b386b5c0a9b875a76d22d707b315fa037affc7819cda08b6d0489756",
+                "sha256:73a1f2a529604c50c262179fcca59c87a05ff4614fe8a15c186934d84d09d9a5",
+                "sha256:7da99445fd890206bfcc7419f79871ba8e73d9d9e6b82fe09980bc5bb4efc35f",
+                "sha256:99d59e0bcadac4aa3280616591fb7bcd560e2218f5e31d5223a2e12a1425d495",
+                "sha256:a4cc09489843c70b22e8373ca3dfa52b3fab778b57cf81462f1203b0852e95e3",
+                "sha256:a61dc29cfca9831a03442a21d4b5fd77e3067beca4b5f81f1a89a04a71cf93fa",
+                "sha256:b1853df739b32fa913cc59ad9137caa9cc3d97ff871e2bbd89c2a2a1d4a69451",
+                "sha256:b1f44c335532c0581b77491b7715a871d0dd72e97487ac0f57337ccf3ab3469b",
+                "sha256:b261e0cb0d6faa8fd6863af26d30351fd2ffdb15b82e51e81e96b9e9e2e7ba16",
+                "sha256:c857ae5dba375ea26a6228f98c195fec0898a0fd91bcf0e8a0cae6d9faf3eca7",
+                "sha256:cf5bb4a7d53a71bb6a0144d31df784a973b36d8687d615ef6a7e9b1809917a9b",
+                "sha256:db9814ff0457b46f2e1d494c1efa4111ca089e08c8b983635ebffb9c1573361f",
+                "sha256:df04f4bad8a359daa2ff74f8108ea051670cafbca533bb2636c58b16e962989e",
+                "sha256:ecf81720934a0e18526177e645cbd6a8a21bb0ddc887ff9738de07a1df5c6b61",
+                "sha256:edfa6fba9157e0e3be0f40168eb142511012683ac3dc82420bee4a3f3981b30e"
+            ],
+            "index": "pypi",
+            "version": "==1.15.4"
         },
         "requests": {
             "hashes": [