diff --git a/fixca/ca.py b/fixca/ca.py
index e9aac27..6549a9e 100644
--- a/fixca/ca.py
+++ b/fixca/ca.py
@@ -151,7 +151,7 @@ def store_ca_certs(self, exclude_system: bool = True) -> None:
             set_secret(
                 namespace=namespace,
                 secret_name="fix-ca-cert",
-                data={"ca.crt": cert_to_bytes(self.cert).decode("utf-8")},
+                data={"ca.pem": cert_to_bytes(self.cert).decode("utf-8")},
             )