diff --git a/step_5/bert/Pipfile.lock b/step_5/bert/Pipfile.lock
index f131181..093c949 100644
--- a/step_5/bert/Pipfile.lock
+++ b/step_5/bert/Pipfile.lock
@@ -18,23 +18,32 @@
     "default": {
         "absl-py": {
             "hashes": [
-                "sha256:0ce45920056fbbb66f52fcee7408ba6311da19f55589b2b3aab9f8af92a0e1f2"
+                "sha256:afe94e3c751ff81aad55d33ab6e630390da32780110b5af72ae81ecff8418d9e",
+                "sha256:b44f68984a5ceb2607d135a615999b93924c771238a63920d17d3387b0d229d5"
             ],
-            "version": "==0.8.0"
+            "version": "==0.12.0"
         },
         "astor": {
             "hashes": [
-                "sha256:0e41295809baf43ae8303350e031aff81ae52189b6f881f36d623fa8b2f1960e",
-                "sha256:37a6eed8b371f1228db08234ed7f6cfdc7817a3ed3824797e20cbb11dc2a7862"
+                "sha256:070a54e890cefb5b3739d19f30f5a5ec840ffc9c50ffa7d23cc9fc1a38ebbfc5",
+                "sha256:6a6effda93f4e1ce9f618779b2dd1d9d84f1e32812c23a29b3fff6fd7f63fa5e"
             ],
-            "version": "==0.8.0"
+            "version": "==0.8.1"
+        },
+        "cached-property": {
+            "hashes": [
+                "sha256:9fa5755838eecbb2d234c3aa390bd80fbd3ac6b6869109bfc1b499f7bd89a130",
+                "sha256:df4f613cf7ad9a588cc381aaf4a512d26265ecebd5eb9e1ba12f1319eb85a6a0"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==1.5.2"
         },
         "click": {
             "hashes": [
-                "sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13",
-                "sha256:5b94b49521f6456670fdb30cd82a4eca9412788a93fa6dd6df72c94d5a8ff2d7"
+                "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a",
+                "sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc"
             ],
-            "version": "==7.0"
+            "version": "==7.1.2"
         },
         "flask": {
             "hashes": [
@@ -46,86 +55,92 @@
         },
         "gast": {
             "hashes": [
-                "sha256:cc987dad3bea3104cd1cc4832c7d864023eb4578043b63ee061c7b42febd4c16"
+                "sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1",
+                "sha256:b7adcdd5adbebf1adf17378da5ba3f543684dbec47b1cda1f3997e573cd542c4"
             ],
-            "version": "==0.3.1"
+            "version": "==0.4.0"
         },
         "google-pasta": {
             "hashes": [
-                "sha256:40b4f55ba7b44823eac96d055000572c84ce48cacb3e91c100869844064b2d07",
-                "sha256:79d1ce28b381d68e98ef7707d19909adb58912f8dae8734402454424fc76b8fe",
-                "sha256:7ca8afc4cfeebf4a079cdf586333d5447cecd19a997475136138fc83c3351bc4"
+                "sha256:4612951da876b1a10fe3960d7226f0c7682cf901e16ac06e473b267a5afa8954",
+                "sha256:b32482794a366b5366a32c92a9a9201b107821889935a02b3e51f6b432ea84ed",
+                "sha256:c9f2c8dfc8f96d0d5808299920721be30c9eec37f2389f28904f454565c8a16e"
             ],
-            "version": "==0.1.7"
+            "version": "==0.2.0"
         },
         "grpcio": {
             "hashes": [
-                "sha256:1303578092f1f6e4bfbc354c04ac422856c393723d3ffa032fff0f7cb5cfd693",
-                "sha256:229c6b313cd82bec8f979b059d87f03cc1a48939b543fe170b5a9c5cf6a6bc69",
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-                "sha256:41cfb222db358227521f9638a6fbc397f310042a4db5539a19dea01547c621cd",
-                "sha256:43330501660f636fd6547d1e196e395cd1e2c2ae57d62219d6184a668ffebda0",
-                "sha256:45d7a2bd8b4f25a013296683f4140d636cdbb507d94a382ea5029a21e76b1648",
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-                "sha256:610f97ebae742a57d336a69b09a9c7d7de1f62aa54aaa8adc635b38f55ba4382",
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-                "sha256:7745c365195bb0605e3d47b480a2a4d1baa8a41a5fd0a20de5fa48900e2c886a",
-                "sha256:79491e0d2b77a1c438116bf9e5f9e2e04e78b78524615e2ce453eff62db59a09",
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-                "sha256:8a060e1f72fb94eee8a035ed29f1201ce903ad14cbe27bda56b4a22a8abda045",
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-                "sha256:962aebf2dd01bbb2cdb64580e61760f1afc470781f9ecd5fe8f3d8dcd8cf4556",
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-                "sha256:af5b929debc336f6bab9b0da6915f9ee5e41444012aed6a79a3c7e80d7662fdf",
-                "sha256:b9cdb87fc77e9a3eabdc42a512368538d648fa0760ad30cf97788076985c790a",
-                "sha256:c5e6380b90b389454669dc67d0a39fb4dc166416e01308fcddd694236b8329ef",
-                "sha256:d60c90fe2bfbee735397bf75a2f2c4e70c5deab51cd40c6e4fa98fae018c8db6",
-                "sha256:d8582c8b1b1063249da1588854251d8a91df1e210a328aeb0ece39da2b2b763b",
-                "sha256:ddbf86ba3aa0ad8fed2867910d2913ee237d55920b55f1d619049b3399f04efc",
-                "sha256:e46bc0664c5c8a0545857aa7a096289f8db148e7f9cca2d0b760113e8994bddc",
-                "sha256:f6437f70ec7fed0ca3a0eef1146591bb754b418bb6c6b21db74f0333d624e135",
-                "sha256:f71693c3396530c6b00773b029ea85e59272557e9bd6077195a6593e4229892a",
-                "sha256:f79f7455f8fbd43e8e9d61914ecf7f48ba1c8e271801996fef8d6a8f3cc9f39f"
-            ],
-            "version": "==1.23.0"
+                "sha256:02030e1afd3247f2b159df9dff959ec79dd4047b1c4dd4eec9e3d1642efbd504",
+                "sha256:0648a6d5d7ddcd9c8462d7d961660ee024dad6b88152ee3a521819e611830edf",
+                "sha256:09af8ceb91860086216edc6e5ea15f9beb2cf81687faa43b7c03216f5b73e244",
+                "sha256:1030e74ddd0fa6e3bad7944f0c68cf1251b15bcd70641f0ad3858fdf2b8602a0",
+                "sha256:1056b558acfd575d774644826df449e1402a03e456a3192fafb6b06d1069bf80",
+                "sha256:20b7c4c5513e1135a2261e56830c0e710f205fee92019b92fe132d7f16a5cfd8",
+                "sha256:216fbd2a488e74c3b96e240e4054c85c4c99102a439bc9f556936991643f43bc",
+                "sha256:24d4c2c5e540e666c52225953d6813afc8ccf9bf46db6a72edd4e8d606656248",
+                "sha256:2abaa9f0d83bd0b26f6d0d1fc4b97d73bde3ceac36ab857f70d3cabcf31c5c79",
+                "sha256:3a6295aa692806218e97bb687a71cd768450ed99e2acddc488f18d738edef463",
+                "sha256:3c5204e05e18268dd6a1099ca6c106fd9d00bcae1e37d5a5186094c55044c941",
+                "sha256:3e75643d21db7d68acd541d3fec66faaa8061d12b511e101b529ff12a276bb9b",
+                "sha256:45ea10dd133a43b10c0b4326834107ebccfee25dab59b312b78e018c2d72a1f0",
+                "sha256:4c05ed54b2a00df01e633bebec819b512bf0c60f8f5b3b36dd344dc673b02fea",
+                "sha256:4dc7295dc9673f7af22c1e38c2a2c24ecbd6773a4c5ed5a46ed38ad4dcf2bf6c",
+                "sha256:52ec563da45d06319224ebbda53501d25594de64ee1b2786e119ba4a2f1ce40c",
+                "sha256:5378189fb897567f4929f75ab67a3e0da4f8967806246cb9cfa1fa06bfbdb0d5",
+                "sha256:5e4920a8fb5d17b2c5ba980db0ac1c925bbee3e5d70e96da3ec4fb1c8600d68f",
+                "sha256:6b30682180053eebc87802c2f249d2f59b430e1a18e8808575dde0d22a968b2c",
+                "sha256:6f6f8a8b57e40347d0bf32c2135037dae31d63d3b19007b4c426a11b76deaf65",
+                "sha256:76daa3c4d58fcf40f7969bdb4270335e96ee0382a050cadcd97d7332cd0251a3",
+                "sha256:7863c2a140e829b1f4c6d67bf0bf15e5321ac4766d0a295e2682970d9dd4b091",
+                "sha256:7cbeac9bbe6a4a7fce4a89c892c249135dd9f5f5219ede157174c34a456188f0",
+                "sha256:7e32bc01dfaa7a51c547379644ea619a2161d6969affdac3bbd173478d26673d",
+                "sha256:85a6035ae75ce964f78f19cf913938596ccf068b149fcd79f4371268bcb9aa7c",
+                "sha256:8a89190de1985a54ef311650cf9687ffb81de038973fd32e452636ddae36b29f",
+                "sha256:9a18299827a70be0507f98a65393b1c7f6c004fe2ca995fe23ffac534dd187a7",
+                "sha256:a602d6b30760bbbb2fe776caaa914a0d404636cafc3f2322718bf8002d7b1e55",
+                "sha256:a66ea59b20f3669df0f0c6a3bd57b985e5b2d1dcf3e4c29819bb8dc232d0fd38",
+                "sha256:b003e24339030ed356f59505d1065b89e1f443ef41ce71ca9069be944c0d2e6b",
+                "sha256:bab743cdac1d6d8326c65d1d091d0740b39966dfab06519f74a03b3d128b8454",
+                "sha256:c18739fecb90760b183bfcb4da1cf2c6bf57e38f7baa2c131d5f67d9a4c8365d",
+                "sha256:cbd82c479338fc1c0e5c3db09752b61fe47d40c6e38e4be8657153712fa76674",
+                "sha256:dee9971aef20fc09ed897420446c4d0926cd1d7630f343333288523ca5b44bb2",
+                "sha256:e1b9e906aa6f7577016e86ed7f3a69cae7dab4e41356584dc7980f76ea65035f",
+                "sha256:e3a83c5db16f95daac1d96cf3c9018d765579b5a29bb336758d793028e729921",
+                "sha256:eafafc7e040e36aa926edc731ab52c23465981888779ae64bfc8ad85888ed4f3",
+                "sha256:ec753c022b39656f88409fbf9f2d3b28497e3f17aa678f884d78776b41ebe6bd",
+                "sha256:ed16bfeda02268e75e038c58599d52afc7097d749916c079b26bc27a66900f7d",
+                "sha256:f214076eb13da9e65c1aa9877b51fca03f51a82bd8691358e1a1edd9ff341330",
+                "sha256:f22c11772eff25ba1ca536e760b8c34ba56f2a9d66b6842cb11770a8f61f879d",
+                "sha256:f241116d4bf1a8037ff87f16914b606390824e50902bdbfa2262e855fbf07fe5",
+                "sha256:f3f70505207ee1cee65f60a799fd8e06e07861409aa0d55d834825a79b40c297",
+                "sha256:f591597bb25eae0094ead5a965555e911453e5f35fdbdaa83be11ef107865697",
+                "sha256:f6efa62ca1fe02cd34ec35f53446f04a15fe2c886a4e825f5679936a573d2cbf",
+                "sha256:f7740d9d9451f3663df11b241ac05cafc0efaa052d2fdca6640c4d3748eaf6e2"
+            ],
+            "version": "==1.36.1"
         },
         "h5py": {
             "hashes": [
-                "sha256:063947eaed5f271679ed4ffa36bb96f57bc14f44dd4336a827d9a02702e6ce6b",
-                "sha256:13c87efa24768a5e24e360a40e0bc4c49bcb7ce1bb13a3a7f9902cec302ccd36",
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-                "sha256:3dad1730b6470fad853ef56d755d06bb916ee68a3d8272b3bab0c1ddf83bb99e",
-                "sha256:51ae56894c6c93159086ffa2c94b5b3388c0400548ab26555c143e7cfa05b8e5",
-                "sha256:54817b696e87eb9e403e42643305f142cd8b940fe9b3b490bbf98c3b8a894cf4",
-                "sha256:549ad124df27c056b2e255ea1c44d30fb7a17d17676d03096ad5cd85edb32dc1",
-                "sha256:6998be619c695910cb0effe5eb15d3a511d3d1a5d217d4bd0bebad1151ec2262",
-                "sha256:6ef7ab1089e3ef53ca099038f3c0a94d03e3560e6aff0e9d6c64c55fb13fc681",
-                "sha256:769e141512b54dee14ec76ed354fcacfc7d97fea5a7646b709f7400cf1838630",
-                "sha256:79b23f47c6524d61f899254f5cd5e486e19868f1823298bc0c29d345c2447172",
-                "sha256:7be5754a159236e95bd196419485343e2b5875e806fe68919e087b6351f40a70",
-                "sha256:84412798925dc870ffd7107f045d7659e60f5d46d1c70c700375248bf6bf512d",
-                "sha256:86868dc07b9cc8cb7627372a2e6636cdc7a53b7e2854ad020c9e9d8a4d3fd0f5",
-                "sha256:8bb1d2de101f39743f91512a9750fb6c351c032e5cd3204b4487383e34da7f75",
-                "sha256:a5f82cd4938ff8761d9760af3274acf55afc3c91c649c50ab18fcff5510a14a5",
-                "sha256:aac4b57097ac29089f179bbc2a6e14102dd210618e94d77ee4831c65f82f17c0",
-                "sha256:bffbc48331b4a801d2f4b7dac8a72609f0b10e6e516e5c480a3e3241e091c878",
-                "sha256:c0d4b04bbf96c47b6d360cd06939e72def512b20a18a8547fa4af810258355d5",
-                "sha256:c54a2c0dd4957776ace7f95879d81582298c5daf89e77fb8bee7378f132951de",
-                "sha256:cbf28ae4b5af0f05aa6e7551cee304f1d317dbed1eb7ac1d827cee2f1ef97a99",
-                "sha256:d3c59549f90a891691991c17f8e58c8544060fdf3ccdea267100fa5f561ff62f",
-                "sha256:d7ae7a0576b06cb8e8a1c265a8bc4b73d05fdee6429bffc9a26a6eb531e79d72",
-                "sha256:ecf4d0b56ee394a0984de15bceeb97cbe1fe485f1ac205121293fc44dcf3f31f",
-                "sha256:f0e25bb91e7a02efccb50aba6591d3fe2c725479e34769802fcdd4076abfa917",
-                "sha256:f23951a53d18398ef1344c186fb04b26163ca6ce449ebd23404b153fd111ded9",
-                "sha256:ff7d241f866b718e4584fa95f520cb19405220c501bd3a53ee11871ba5166ea2"
-            ],
-            "version": "==2.10.0"
+                "sha256:25294f2690c4813475f566663a21ef1c1b11ef892b26d46454bf0a59e507d5aa",
+                "sha256:4160cb0d35a83c6fb9f1cad65e826dfaeb044e001549ea78003573fb6bee4042",
+                "sha256:6766104ed13ff40b3b7bfd49f13fced5274103ee9af53667e7a97c5236b14741",
+                "sha256:7c5b5f18c96fb63399280a724734fd91e1781c6b60e385e439ad8e654a294ba4",
+                "sha256:89474be911bfcdb34cbf0d98b8ec48b578c27a89fdb1ae4ee7513f1ef8d9249e",
+                "sha256:90ee8a00aca5c4e0bbd821c1f6118cb9a814c15dcfdb03572c615a4431166480",
+                "sha256:a6632ac11167bbad1a8fc5c82508b97ab8c12bdfe4b659254b6f7f63d3c76744",
+                "sha256:d791b710d3e54c4d2c32cb881b183db5674ceb03bf6a0c1f3fb3cf50d8997e0a",
+                "sha256:d8467fa56356ad2efad2b5986326e71d4d74505de6f6c7bb46dbba09b37459ac",
+                "sha256:fdabe99139a9c5e1a416b7ed38c89505f8501b376d54496e1bb737cb33df61cf"
+            ],
+            "version": "==3.2.1"
+        },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:742add720a20d0467df2f444ae41704000f50e1234f46174b51f9c6031a1bd71",
+                "sha256:b74159469b464a99cb8cc3e21973e4d96e05d3024d337313fedb618a6e86e6f4"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==3.7.3"
         },
         "itsdangerous": {
             "hashes": [
@@ -136,10 +151,11 @@
         },
         "jinja2": {
             "hashes": [
-                "sha256:065c4f02ebe7f7cf559e49ee5a95fb800a9e4528727aec6f24402a5374c65013",
-                "sha256:14dd6caf1527abb21f08f86c784eac40853ba93edb79552aa1e4b8aef1b61c7b"
+                "sha256:03e47ad063331dd6a3f04a43eddca8a966a26ba0c5b7207a9a9e4e08f1b29419",
+                "sha256:a6d58433de0ae800347cab1fa3043cebbabe8baa9d29e668f1c768cb87a333c6"
             ],
-            "version": "==2.10.1"
+            "index": "pypi",
+            "version": "==2.11.3"
         },
         "keras-applications": {
             "hashes": [
@@ -150,17 +166,17 @@
         },
         "keras-preprocessing": {
             "hashes": [
-                "sha256:44aee5f2c4d80c3b29f208359fcb336df80f293a0bb6b1c738da43ca206656fb",
-                "sha256:5a8debe01d840de93d49e05ccf1c9b81ae30e210d34dacbcc47aeb3049b528e5"
+                "sha256:7b82029b130ff61cc99b55f3bd27427df4838576838c5b2f65940e4fcec99a7b",
+                "sha256:add82567c50c8bc648c14195bf544a5ce7c1f76761536956c3d2978970179ef3"
             ],
-            "version": "==1.1.0"
+            "version": "==1.1.2"
         },
         "markdown": {
             "hashes": [
-                "sha256:2e50876bcdd74517e7b71f3e7a76102050edec255b3983403f1a63e7c8a41e7a",
-                "sha256:56a46ac655704b91e5b7e6326ce43d5ef72411376588afa1dd90e881b83c7e8c"
+                "sha256:31b5b491868dcc87d6c24b7e3d19a0d730d59d3e46f4eea6430a321bed387a49",
+                "sha256:96c3ba1261de2f7547b46a00ea8463832c921d3f9d6aba3f255a6f71386db20c"
             ],
-            "version": "==3.1.1"
+            "version": "==3.3.4"
         },
         "markupsafe": {
             "hashes": [
@@ -168,53 +184,86 @@
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@@ -239,45 +288,49 @@
         },
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         "tensorboard": {
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@@ -326,26 +379,42 @@
             ],
             "version": "==1.1.0"
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