diff --git a/Pipfile b/Pipfile
index 756dc94..ee65506 100644
--- a/Pipfile
+++ b/Pipfile
@@ -6,6 +6,7 @@ verify_ssl = true
 [dev-packages]
 maturin = ">=0.7.7"
 pytest = ">=4.0"
+e1839a8 = {path = "."}
 
 [requires]
 python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
index 4ae5d58..027a35d 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "7438584c31033535a2b8484203f99360422c2bb8fdb4ce021ff4fc1cadaf55a3"
+            "sha256": "1c94e878490fee6005d6f867575b7724b9129e90d5f766d8344985bb9b3a4e07"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -24,6 +24,9 @@
             ],
             "version": "==19.3.0"
         },
+        "e1839a8": {
+            "path": "."
+        },
         "maturin": {
             "hashes": [
                 "sha256:2533c648aa8fa19f7a9d4f62282b4adce2f9c07c49f512005f92911be767555e",