diff --git a/jupyter_server/auth/identity.py b/jupyter_server/auth/identity.py
index fd2b3db85d..be238b63e5 100644
--- a/jupyter_server/auth/identity.py
+++ b/jupyter_server/auth/identity.py
@@ -651,7 +651,7 @@ def process_login_form(self, handler: web.RequestHandler) -> User | None:
                 config_dir = handler.settings.get("config_dir", "")
                 config_file = os.path.join(config_dir, "jupyter_server_config.json")
                 self.hashed_password = set_password(new_password, config_file=config_file)
-                self.log.info(_i18n(f"Wrote hashed password to {config_file}"))
+                self.log.info(_i18n("Wrote hashed password to {file}").format(file=config_file))
 
         return user
 
diff --git a/jupyter_server/serverapp.py b/jupyter_server/serverapp.py
index 01489e3dc5..75143b6be8 100644
--- a/jupyter_server/serverapp.py
+++ b/jupyter_server/serverapp.py
@@ -2857,7 +2857,9 @@ def running_server_info(self, kernel_count: bool = True) -> str:
             info += kernel_msg % n_kernels
             info += "\n"
         # Format the info so that the URL fits on a single line in 80 char display
-        info += _i18n(f"Jupyter Server {ServerApp.version} is running at:\n{self.display_url}")
+        info += _i18n("Jupyter Server {version} is running at:\n{url}").format(
+            version=ServerApp.version, url=self.display_url
+        )
         if self.gateway_config.gateway_enabled:
             info += (
                 _i18n("\nKernels will be managed by the Gateway server running at:\n%s")