diff --git a/Pipfile b/Pipfile
index 4a92e47..898df0d 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,10 +4,10 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
-docker = "*"
+docker = "~=3.7"
 graphviz = "*"
 
 [dev-packages]
 
 [requires]
-python_version = "3.7"
+python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
index ff243c8..fb6cb46 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,11 +1,11 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "9ea88e9a4fb06636a8077b1f1bc6e322fa52659b9159fffa1260d5ad8225ddd4"
+            "sha256": "c316715bdcade179f443832fe51c6ec5b863aed04f6dadd5a25fc36efe877089"
         },
         "pipfile-spec": 6,
         "requires": {
-            "python_version": "3.7"
+            "python_version": "3.8"
         },
         "sources": [
             {
@@ -18,10 +18,10 @@
     "default": {
         "certifi": {
             "hashes": [
-                "sha256:339dc09518b07e2fa7eda5450740925974815557727d6bd35d319c1524a04a4c",
-                "sha256:6d58c986d22b038c8c0df30d639f23a3e6d172a05c3583e766f4c0b785c0986a"
+                "sha256:1d987a998c75633c40847cc966fcf5904906c920a7f17ef374f5aa4282abd304",
+                "sha256:51fcb31174be6e6664c5f69e3e1691a2d72a1a12e90f872cbdb1567eb47b6519"
             ],
-            "version": "==2018.10.15"
+            "version": "==2020.4.5.1"
         },
         "chardet": {
             "hashes": [
@@ -32,61 +32,65 @@
         },
         "docker": {
             "hashes": [
-                "sha256:31421f16c01ffbd1ea7353c7e7cd7540bf2e5906d6173eb51c8fea4e0ea38b19",
-                "sha256:fbe82af9b94ccced752527c8de07fa20267f9634b48674ba478a0bb4000a0b1e"
+                "sha256:2434b396e616a5ef682fbf80e04839a59e8b81880ece5662c33dff34b8863519",
+                "sha256:a062a9f82dff025f79c2097c46f49f143f8898274db7e66041f78cafee66b962"
             ],
             "index": "pypi",
-            "version": "==3.5.1"
+            "version": "==3.7.3"
         },
         "docker-pycreds": {
             "hashes": [
-                "sha256:0a941b290764ea7286bd77f54c0ace43b86a8acd6eb9ead3de9840af52384079",
-                "sha256:8b0e956c8d206f832b06aa93a710ba2c3bcbacb5a314449c040b0b814355bbff"
+                "sha256:6ce3270bcaf404cc4c3e27e4b6c70d3521deae82fb508767870fdbf772d584d4",
+                "sha256:7266112468627868005106ec19cd0d722702d2b7d5912a28e19b826c3d37af49"
             ],
-            "version": "==0.3.0"
+            "version": "==0.4.0"
         },
         "graphviz": {
             "hashes": [
-                "sha256:0e1744a45b0d707bc44f99c7b8e5f25dc22cf96b6aaf2432ac308ed9822a9cb6",
-                "sha256:d311be4fddfe832a56986ac5e1d6e8715d7fcb0208560da79d1bb0f72abef41f"
+                "sha256:cb0e878f90378489f17aab140b68e64e44b79e4cb59a530c8863d84bf2e2e5f5",
+                "sha256:e104ba036c8aef84320ec80560e544cd3cad68c9f90394b4e2b87bc44ab09791"
             ],
             "index": "pypi",
-            "version": "==0.10.1"
+            "version": "==0.14"
         },
         "idna": {
             "hashes": [
-                "sha256:156a6814fb5ac1fc6850fb002e0852d56c0c8d2531923a51032d1b70760e186e",
-                "sha256:684a38a6f903c1d71d6d5fac066b58d7768af4de2b832e426ec79c30daa94a16"
+                "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb",
+                "sha256:a068a21ceac8a4d63dbfd964670474107f541babbd2250d61922f029858365fa"
             ],
-            "version": "==2.7"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.9"
         },
         "requests": {
             "hashes": [
-                "sha256:65b3a120e4329e33c9889db89c80976c5272f56ea92d3e74da8a463992e3ff54",
-                "sha256:ea881206e59f41dbd0bd445437d792e43906703fff75ca8ff43ccdb11f33f263"
+                "sha256:43999036bfa82904b6af1d99e4882b560e5e2c68e5c4b0aa03b655f3d7d73fee",
+                "sha256:b3f43d496c6daba4493e7c431722aeb7dbc6288f52a6e04e7b6023b0247817e6"
             ],
-            "version": "==2.20.1"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==2.23.0"
         },
         "six": {
             "hashes": [
-                "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9",
-                "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"
+                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
+                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
             ],
-            "version": "==1.11.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.15.0"
         },
         "urllib3": {
             "hashes": [
-                "sha256:61bf29cada3fc2fbefad4fdf059ea4bd1b4a86d2b6d15e1c7c0b582b9752fe39",
-                "sha256:de9529817c93f27c8ccbfead6985011db27bd0ddfcdb2d86f3f663385c6a9c22"
+                "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527",
+                "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"
             ],
-            "version": "==1.24.1"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
+            "version": "==1.25.9"
         },
         "websocket-client": {
             "hashes": [
-                "sha256:8c8bf2d4f800c3ed952df206b18c28f7070d9e3dcbd6ca6291127574f57ee786",
-                "sha256:e51562c91ddb8148e791f0155fdb01325d99bb52c4cdbb291aee7a3563fd0849"
+                "sha256:0fc45c961324d79c781bab301359d5a1b00b13ad1b10415a4780229ef71a5549",
+                "sha256:d735b91d6d1692a6a181f2a8c9e0238e5f6373356f561bb9dc4c7af36f452010"
             ],
-            "version": "==0.54.0"
+            "version": "==0.57.0"
         }
     },
     "develop": {}