diff --git a/Makefile b/Makefile
index cef9e80..2d5a641 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,7 @@
 
 
 
+
 tests:
 	jsonschema -i examples/newspaper_issue/example0.json  json/newspaper/issue.schema.json && $(print-test-ok) || $(print-test-failed)
 	jsonschema -i examples/newspaper_issue/example1.json  json/newspaper/issue.schema.json && $(print-test-ok)|| $(print-test-failed)
diff --git a/Pipfile b/Pipfile
new file mode 100644
index 0000000..e0f9bf9
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,12 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+
+[packages]
+jsonschema = "*"
+
+[requires]
+python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
new file mode 100644
index 0000000..92287bd
--- /dev/null
+++ b/Pipfile.lock
@@ -0,0 +1,49 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "38cfc4f5568a2a86cd1dde840d1c55666c107df00cf6c7048bf3b9a495dda497"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.8"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "attrs": {
+            "hashes": [
+                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
+                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+            ],
+            "version": "==20.3.0"
+        },
+        "jsonschema": {
+            "hashes": [
+                "sha256:4e5b3cf8216f577bee9ce139cbe72eca3ea4f292ec60928ff24758ce626cd163",
+                "sha256:c8a85b28d377cc7737e46e2d9f2b4f44ee3c0e1deac6bf46ddefc7187d30797a"
+            ],
+            "index": "pypi",
+            "version": "==3.2.0"
+        },
+        "pyrsistent": {
+            "hashes": [
+                "sha256:2e636185d9eb976a18a8a8e96efce62f2905fea90041958d8cc2a189756ebf3e"
+            ],
+            "version": "==0.17.3"
+        },
+        "six": {
+            "hashes": [
+                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
+                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+            ],
+            "version": "==1.15.0"
+        }
+    },
+    "develop": {}
+}