diff --git a/src/cosl/coordinated_workers/nginx.py b/src/cosl/coordinated_workers/nginx.py
index 4262552..cde53bb 100644
--- a/src/cosl/coordinated_workers/nginx.py
+++ b/src/cosl/coordinated_workers/nginx.py
@@ -89,8 +89,7 @@ def configure_tls(self, private_key: str, server_cert: str, ca_cert: str) -> Non
             Path(CA_CERT_PATH).parent.mkdir(parents=True, exist_ok=True)
             Path(CA_CERT_PATH).write_text(ca_cert)
 
-            # FIXME: uncomment as soon as the nginx image contains the ca-certificates package
-            # self._container.exec(["update-ca-certificates", "--fresh"])
+            self._container.exec(["update-ca-certificates", "--fresh"])
 
     def delete_certificates(self) -> None:
         """Delete the certificate files from disk and run update-ca-certificates."""
@@ -103,8 +102,7 @@ def delete_certificates(self) -> None:
                 self._container.remove_path(CA_CERT_PATH, recursive=True)
             if Path(CA_CERT_PATH).exists():
                 Path(CA_CERT_PATH).unlink(missing_ok=True)
-            # FIXME: uncomment as soon as the nginx image contains the ca-certificates package
-            # self._container.exec(["update-ca-certificates", "--fresh"])
+            self._container.exec(["update-ca-certificates", "--fresh"])
 
     def _has_config_changed(self, new_config: str) -> bool:
         """Return True if the passed config differs from the one on disk."""