diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index 7969d1d..381d1be
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
     py_modules=["tap_dixa"],
     install_requires=[
         "backoff==1.8.0",
-        "certifi==2021.5.30",
+        "certifi==2023.7.22",
         "charset-normalizer==2.0.4",
         "ciso8601==2.1.3",
         "idna==3.2",