diff --git a/Pipfile b/Pipfile
index 9d0d9df..7e39c2b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -9,5 +9,6 @@ pyyaml = ">=5.4"
 [dev-packages]
 
 [requires]
-python_version = "3"
+python_version = "3.6"
+
 
diff --git a/Pipfile.lock b/Pipfile.lock
index 85cfea3..77ed537 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,11 +1,11 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ac6a3bf65ec43902d7a8907c3b0ae70e365127a1f93ecf12080f847eadb7dc35"
+            "sha256": "9d12078e91d575b356fb3bc19bc4769c4fb85ff7e170023c6cb38a0e246a0bb7"
         },
         "pipfile-spec": 6,
         "requires": {
-            "python_version": "3"
+            "python_version": "3.6"
         },
         "sources": [
             {