diff --git a/Pipfile.lock b/Pipfile.lock
index dd1bf72..b88d006 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -80,17 +80,17 @@
         },
         "pytz": {
             "hashes": [
-                "sha256:32b0891edff07e28efe91284ed9c31e123d84bea3fd98e1f72be2508f43ef8d9",
-                "sha256:d5f05e487007e29e03409f9398d074e158d920d36eb82eaf66fb1136b0c5374c"
+                "sha256:26c0b32e437e54a18161324a2fca3c4b9846b74a8dccddd843113109e1116b32",
+                "sha256:c894d57500a4cd2d5c71114aaab77dbab5eabd9022308ce5ac9bb93a60a6f0c7"
             ],
-            "version": "==2018.9"
+            "version": "==2019.2"
         },
         "pytzdata": {
             "hashes": [
-                "sha256:9626e42fd9df77b16aedbd909d1e5fda839be47966adb7089b990f3452c45dd8",
-                "sha256:dddaaf4f1717820a6fdcac94057e03c1a15b3829a44d9eaf19988917977db408"
+                "sha256:c0c8316eaf6c25ba45816390a1a45c39790767069b3275c5f7de3ddf773eb810",
+                "sha256:e8a91952afd853642a49f0713caac3e15a5306855ff4a47af4ddec5b7dd23a09"
             ],
-            "version": "==2018.9"
+            "version": "==2019.2"
         },
         "six": {
             "hashes": [
@@ -123,12 +123,20 @@
         },
         "beautifulsoup4": {
             "hashes": [
-                "sha256:034740f6cb549b4e932ae1ab975581e6103ac8f942200a0e9759065984391858",
-                "sha256:945065979fb8529dd2f37dbb58f00b661bdbcbebf954f93b32fdf5263ef35348",
-                "sha256:ba6d5c59906a85ac23dadfe5c88deaf3e179ef565f4898671253e50a78680718"
+                "sha256:05668158c7b85b791c5abde53e50265e16f98ad601c402ba44d70f96c4159612",
+                "sha256:25288c9e176f354bf277c0a10aa96c782a6a18a17122dba2e8cec4a97e03343b",
+                "sha256:f040590be10520f2ea4c2ae8c3dae441c7cfff5308ec9d58a0ec0c1b8f81d469"
             ],
             "index": "pypi",
-            "version": "==4.7.1"
+            "version": "==4.8.0"
+        },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:9ff1b1c5a354142de080b8a4e9803e5d0d59283c93aed808617c787d16768375",
+                "sha256:b7143592e374e50584564794fcb8aaf00a23025f9db866627f89a21491847a8d"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==0.20"
         },
         "mccabe": {
             "hashes": [
@@ -139,18 +147,24 @@
         },
         "more-itertools": {
             "hashes": [
-                "sha256:2112d2ca570bb7c3e53ea1a35cd5df42bb0fd10c45f0fb97178679c3c03d64c7",
-                "sha256:c3e4748ba1aad8dba30a4886b0b1a2004f9a863837b8654e7059eebf727afa5a"
+                "sha256:409cd48d4db7052af495b09dec721011634af3753ae1ef92d2b32f73a745f832",
+                "sha256:92b8c4b06dac4f0611c0729b2f2ede52b2e1bac1ab48f089c7ddc12e26bb60c4"
             ],
-            "markers": "python_version > '2.7'",
-            "version": "==7.0.0"
+            "version": "==7.2.0"
+        },
+        "packaging": {
+            "hashes": [
+                "sha256:a7ac867b97fdc07ee80a8058fe4435ccd274ecc3b0ed61d852d7d53055528cf9",
+                "sha256:c491ca87294da7cc01902edbe30a5bc6c4c28172b5138ab4e4aa1b9d7bfaeafe"
+            ],
+            "version": "==19.1"
         },
         "pluggy": {
             "hashes": [
-                "sha256:19ecf9ce9db2fce065a7a0586e07cfb4ac8614fe96edf628a264b1c70116cf8f",
-                "sha256:84d306a647cc805219916e62aab89caa97a33a1dd8c342e87a37f91073cd4746"
+                "sha256:0825a152ac059776623854c1543d65a4ad408eb3d33ee114dff91e57ec6ae6fc",
+                "sha256:b9817417e95936bf75d85d3f8767f7df6cdde751fc40aed3bb3074cbcb77757c"
             ],
-            "version": "==0.9.0"
+            "version": "==0.12.0"
         },
         "py": {
             "hashes": [
@@ -168,11 +182,10 @@
         },
         "pydocstyle": {
             "hashes": [
-                "sha256:2258f9b0df68b97bf3a6c29003edc5238ff8879f1efb6f1999988d934e432bd8",
-                "sha256:5741c85e408f9e0ddf873611085e819b809fca90b619f5fd7f34bd4959da3dd4",
-                "sha256:ed79d4ec5e92655eccc21eb0c6cf512e69512b4a97d215ace46d17e4990f2039"
+                "sha256:04c84e034ebb56eb6396c820442b8c4499ac5eb94a3bda88951ac3dc519b6058",
+                "sha256:66aff87ffe34b1e49bff2dd03a88ce6843be2f3346b0c9814410d34987fbab59"
             ],
-            "version": "==3.0.0"
+            "version": "==4.0.1"
         },
         "pyflakes": {
             "hashes": [
@@ -183,19 +196,26 @@
         },
         "pylama": {
             "hashes": [
-                "sha256:7e0327ee9b2a350ed73fe54c240894e534e2bccfb23a59ed5ce89f5a5689ee94",
-                "sha256:f81bf3bbd15db802b620903df491e5cd6469dcd542424ce6718425037dcc4d10"
+                "sha256:9bae53ef9c1a431371d6a8dca406816a60d547147b60a4934721898f553b7d8f",
+                "sha256:fd61c11872d6256b019ef1235be37b77c922ef37ac9797df6bd489996dddeb15"
             ],
             "index": "pypi",
-            "version": "==7.6.6"
+            "version": "==7.7.1"
+        },
+        "pyparsing": {
+            "hashes": [
+                "sha256:6f98a7b9397e206d78cc01df10131398f1c8b8510a2f4d97d9abd82e1aacdd80",
+                "sha256:d9338df12903bbf5d65a0e4e87c2161968b10d2e489652bb47001d82a9b028b4"
+            ],
+            "version": "==2.4.2"
         },
         "pytest": {
             "hashes": [
-                "sha256:13c5e9fb5ec5179995e9357111ab089af350d788cbc944c628f3cde72285809b",
-                "sha256:f21d2f1fb8200830dcbb5d8ec466a9c9120e20d8b53c7585d180125cce1d297a"
+                "sha256:95d13143cc14174ca1a01ec68e84d76ba5d9d493ac02716fd9706c949a505210",
+                "sha256:b78fe2881323bd44fd9bd76e5317173d4316577e7b1cddebae9136a4495ec865"
             ],
             "index": "pypi",
-            "version": "==4.4.0"
+            "version": "==5.1.2"
         },
         "six": {
             "hashes": [
@@ -206,17 +226,30 @@
         },
         "snowballstemmer": {
             "hashes": [
-                "sha256:919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128",
-                "sha256:9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89"
+                "sha256:713e53b79cbcf97bc5245a06080a33d54a77e7cce2f789c835a143bcdb5c033e"
             ],
-            "version": "==1.2.1"
+            "version": "==1.9.1"
         },
         "soupsieve": {
             "hashes": [
-                "sha256:3aef141566afd07201b525c17bfaadd07580a8066f82b57f7c9417f26adbd0a3",
-                "sha256:e41a65e99bd125972d84221022beb1e4b5cfc68fa12c170c39834ce32d1b294c"
+                "sha256:8662843366b8d8779dec4e2f921bebec9afd856a5ff2e82cd419acc5054a1a92",
+                "sha256:a5a6166b4767725fd52ae55fee8c8b6137d9a51e9f1edea461a062a759160118"
             ],
-            "version": "==1.9"
+            "version": "==1.9.3"
+        },
+        "wcwidth": {
+            "hashes": [
+                "sha256:3df37372226d6e63e1b1e1eda15c594bca98a22d33a23832a90998faa96bc65e",
+                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
+            ],
+            "version": "==0.1.7"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:3718b1cbcd963c7d4c5511a8240812904164b7f381b647143a89d3b98f9bcd8e",
+                "sha256:f06903e9f1f43b12d371004b4ac7b06ab39a44adc747266928ae6debfa7b3335"
+            ],
+            "version": "==0.6.0"
         }
     }
 }
diff --git a/requirements-dev.txt b/requirements-dev.txt
index e4c2df0..a4eefc2 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,16 +12,21 @@
 
 atomicwrites==1.3.0
 attrs==19.1.0
-beautifulsoup4==4.7.1
+beautifulsoup4==4.8.0
+importlib-metadata==0.20 ; python_version < '3.8'
 mccabe==0.6.1
-more-itertools==7.0.0
-pluggy==0.9.0
+more-itertools==7.2.0
+packaging==19.1
+pluggy==0.12.0
 py==1.8.0
 pycodestyle==2.5.0
-pydocstyle==3.0.0
+pydocstyle==4.0.1
 pyflakes==2.1.1
-pylama==7.6.6
-pytest==4.4.0
+pylama==7.7.1
+pyparsing==2.4.2
+pytest==5.1.2
 six==1.12.0
-snowballstemmer==1.2.1
-soupsieve==1.9
+snowballstemmer==1.9.1
+soupsieve==1.9.3
+wcwidth==0.1.7
+zipp==0.6.0
diff --git a/requirements.txt b/requirements.txt
index f109d8b..951c3b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ jinja2==2.10.1
 markupsafe==1.1.1
 pendulum==1.5.1
 python-dateutil==2.8.0
-pytz==2018.9
-pytzdata==2018.9
+pytz==2019.2
+pytzdata==2019.2
 six==1.12.0
 tzlocal==1.5.1