diff --git a/pyproject.toml b/pyproject.toml
index 53018f6..90e7da1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,6 +5,7 @@ dependencies = [
     "amarillo",
     "amarillo-enhancer",
     "schedule==1.2.1",
+    "gtfs-kit"
 ]
 
 [tool.setuptools.packages]
diff --git a/requirements.txt b/requirements.txt
index 5b0c8d5..ede3859 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
-schedule==1.2.1
\ No newline at end of file
+schedule==1.2.1
+gtfs-kit
\ No newline at end of file