diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 436b15ea..d72b4c65 100755
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -20,6 +20,9 @@ build:
           - pip install -r requirements.txt
       tests:
         override: [py-scrutinizer-run]
+  dependencies: 
+    override: 
+      - pip install .
   tests:
     before:
       - pip install -r requirements.txt
diff --git a/requirements.txt b/requirements.txt
index 6e1f77e0..86c1b074 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 # installs dependencies from ./setup.py, and the package itself,
 # in editable mode
--e .
\ No newline at end of file
+-e .
diff --git a/setup.py b/setup.py
index 05ff9f7d..bad6b2b2 100755
--- a/setup.py
+++ b/setup.py
@@ -91,6 +91,7 @@ def read(fname):
             "twisted",
             "urllib3",
             "pyarrow",
+            "zope-interface",
         ],
         entry_points={
             "console_scripts": [