diff --git a/base/latest.Dockerfile b/base/latest.Dockerfile
index 34048bf..776f2b7 100644
--- a/base/latest.Dockerfile
+++ b/base/latest.Dockerfile
@@ -242,13 +242,8 @@ RUN export PIP_BREAK_SYSTEM_PACKAGES=1 \
     nbconvert \
     python-lsp-server[all] \
   ## Fix https://github.com/jupyterhub/jupyter-server-proxy/issues/445
-  && pyFile="$(echo /usr/local/lib/python*/*-packages/jupyter_server_proxy/handlers.py)" \
   && sed -i 's/subprotocols=self\.subprotocols/subprotocols=self\.selected_subprotocol/g' \
-    "$pyFile" \
-  && if $(grep -q subprotocols=self.selected_subprotocol "$pyFile"); then \
-    sed -i '/def select_subprotocol/{:a;N;s/\n[[:blank:]]\+.*//;ta;!P;D}' \
-      "$pyFile"; \
-  fi \
+    /usr/local/lib/python*/*-packages/jupyter_server_proxy/handlers.py \
   ## Include custom fonts
   && sed -i 's|</head>|<link rel="preload" href="{{page_config.fullStaticUrl}}/assets/fonts/MesloLGS-NF-Regular.woff2" as="font" type="font/woff2" crossorigin="anonymous"></head>|g' /usr/local/share/jupyter/lab/static/index.html \
   && sed -i 's|</head>|<link rel="preload" href="{{page_config.fullStaticUrl}}/assets/fonts/MesloLGS-NF-Italic.woff2" as="font" type="font/woff2" crossorigin="anonymous"></head>|g' /usr/local/share/jupyter/lab/static/index.html \