diff --git a/nctnlp/Pipfile.lock b/nctnlp/Pipfile.lock
index 6733ec3..e85594a 100644
--- a/nctnlp/Pipfile.lock
+++ b/nctnlp/Pipfile.lock
@@ -34,10 +34,11 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c",
-                "sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830"
+                "sha256:35824b4c3a97115964b408844d64aa14db1cc518f6562e8d7261699d1350a9e3",
+                "sha256:4ad3232f5e926d6718ec31cfc1fcadfde020920e278684144551c91769c7bc18"
             ],
-            "version": "==2020.12.5"
+            "index": "pypi",
+            "version": "==2022.12.7"
         },
         "chardet": {
             "hashes": [
@@ -106,6 +107,7 @@
         },
         "nltk": {
             "hashes": [
+                "sha256:a08bdb4b8a1c13de16743068d9eb61c8c71c2e5d642e8e08205c528035843f82",
                 "sha256:bed45551259aa2101381bbdd5df37d44ca2669c5c3dad72439fa459b29137d94"
             ],
             "index": "pypi",
@@ -148,6 +150,7 @@
                 "sha256:dbd18bcf4889b720ba13a27ec2f2aac1981bd41203b3a3b27ba7a33f88ae4827",
                 "sha256:df609c82f18c5b9f6cb97271f03315ff0dbe481a2a02e56aeb1b1a985ce38e60"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==1.19.5"
         },
         "pandas": {
@@ -184,6 +187,7 @@
                 "sha256:0d946b79c56187fe139276d4c8ed612a27a616966c8b9779d6b79e2053587c8b",
                 "sha256:104790893b928d310aae8a955e0bdbaa442fb0ac0a33d1bbb0741c791a407778",
                 "sha256:15527ef218d95a8717486106553b0d54ff2641e795b65668754e17ab9ca6e381",
+                "sha256:164d02c7b1b5e27bf1da581a334762cf66df4a105d7faf46910cfc104ed255e4",
                 "sha256:1826527a0b032f6e20e7ac7f72d7c26dd476a5e5aa82c04aa1c7088a59fded7d",
                 "sha256:22e3aa4ce1c3eebc7f70f9ca7fd4ce1ea33e8bdb7b61996806cd312f08f84a3a",
                 "sha256:244e1101e9a48615b9a16cbd194f73c115fdfefc96894803158608115f703b26",
@@ -201,34 +205,39 @@
                 "sha256:5f8ed5934197a2d4b2087646e98de3e099a237099dcf498b9e38dd3465f74ef4",
                 "sha256:64b064124fcbc8eb04a155117dc4d9a336e3cda3f069958fbc44fe70c3c3d1e9",
                 "sha256:65958b8e4319f992e85dad59d8081888b97fcdbde5f0d14bc28f2848b92d3ef1",
+                "sha256:6be7f7302487c4d456ff8b58a1e31dd3e3c844189f5b892ef23310e0abf0db7b",
                 "sha256:7683428862e20c6a790c19e64f8ccf487f613fbc83d47e3d532df9c81668d451",
                 "sha256:78566d5570c75a127c2491e343dc006798a384f06be588fe9b0cbe5595711559",
                 "sha256:7d1cb00c093dbf1d0b16ccf123e79dee3b82608e4a2a88947695f0460eef13ff",
                 "sha256:8c74e2a9b594f7962c62cef7680a4cb92a96b4e6e3c2f970790da67cc0213a7e",
                 "sha256:8e60aa7699170f55f4b0f56ee6f8415229777ac7e4b4b1aa41fc61eec08c1f1d",
+                "sha256:90e40fbe59e3c223ac689b0537a5df1ab431c19741a2b42240b88cc672d083aa",
                 "sha256:9447b561529576d89d3bf973e5241a88cf76e45bd101963f5236888713dea774",
                 "sha256:970055bfeb0be373f2f5299a3db8432444bad3bc2f198753ee6c2a3a781e0959",
                 "sha256:a6344b8542e584e140dc3c651d68bde51270e79490aa9320f9e708f9b2c39bd5",
                 "sha256:ce309ca470d747b02ba6069d286a17b7df8e9c94d10d727d9cf3a64e51d85184",
                 "sha256:cfbd86ed4c2b2ac71bbdbcea6669bf295def7152e3722ddd9dda94ac7981f33d",
-                "sha256:d7929c513732dff093481f4a0954ed5ff16816365842136b17caa0b4992e49d3"
+                "sha256:d7929c513732dff093481f4a0954ed5ff16816365842136b17caa0b4992e49d3",
+                "sha256:e21180042aaa9589471c27f0cc1e38868abeaa59f988877fa129f3b5efdf6bfb",
+                "sha256:e98a9d2c590bc5a5e84f32430d2dc1fcc549d0a150a613bae6eadb5ef7c20465"
             ],
             "index": "pypi",
             "version": "==3.7.2"
         },
         "python-dateutil": {
             "hashes": [
-                "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c",
-                "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"
+                "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86",
+                "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"
             ],
-            "version": "==2.8.1"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.8.2"
         },
         "pytz": {
             "hashes": [
-                "sha256:16962c5fb8db4a8f63a26646d8886e9d769b6c511543557bc84e9569fb9a9cb4",
-                "sha256:180befebb1927b16f6b57101720075a984c019ac16b1b7575673bea42c6c3da5"
+                "sha256:222439474e9c98fced559f1709d89e6c9cbf8d79c794ff3eb9f8800064291427",
+                "sha256:e89512406b793ca39f5971bc999cc538ce125c0e51c27941bef4568b460095e2"
             ],
-            "version": "==2020.5"
+            "version": "==2022.6"
         },
         "requests": {
             "hashes": [
@@ -300,20 +309,23 @@
                 "sha256:f87b39f4d69cf7d7529d7b1098cb712033b17ea7714aed831b95628f483fd012",
                 "sha256:fa789583fc94a7689b45834453fec095245c7e69c58561dc159b5d5277057e4c"
             ],
+            "markers": "python_version >= '3.6'",
             "version": "==1.5.4"
         },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "version": "==1.15.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.16.0"
         },
         "urllib3": {
             "hashes": [
                 "sha256:2393a695cd12afedd0dcb26fe5d50d0cf248e5a66f75dbd89a3d4eb333a61af4",
                 "sha256:a637e5fae88995b256e3409dc4d52c2e2e0ba32c42a6365fee8bbd2238de3cfb"
             ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3' and python_version < '4'",
             "version": "==1.24.3"
         },
         "webencodings": {