diff --git a/.gitignore b/.gitignore
index bd48b70..c462074 100644
--- a/.gitignore
+++ b/.gitignore
@@ -64,3 +64,4 @@ target/
 .swp.*
 
 .idea/
+Pipfile.lock
diff --git a/Pipfile b/Pipfile
index e0bd9be..1d7b5bb 100644
--- a/Pipfile
+++ b/Pipfile
@@ -12,4 +12,4 @@ name = "pypi"
 
 
 [requires]
-python_version = "3.7"
+python_version = "3.6"
diff --git a/Pipfile.lock b/Pipfile.lock
deleted file mode 100644
index 1d0345d..0000000
--- a/Pipfile.lock
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-    "_meta": {
-        "hash": {
-            "sha256": "9b158f59346fab13c200408cd833a6470dc93b1e3eb4a977d2153bc3325856fd"
-        },
-        "host-environment-markers": {
-            "implementation_name": "cpython",
-            "implementation_version": "3.7.3",
-            "os_name": "posix",
-            "platform_machine": "x86_64",
-            "platform_python_implementation": "CPython",
-            "platform_release": "4.19.27-gentoo-r1",
-            "platform_system": "Linux",
-            "platform_version": "#1 SMP Wed May 1 11:50:20 CEST 2019",
-            "python_full_version": "3.7.3",
-            "python_version": "3.7",
-            "sys_platform": "linux"
-        },
-        "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.7"
-        },
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.python.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {},
-    "develop": {}
-}