diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3dd4acf..b6fa487 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,20 +12,6 @@ jobs:
     - uses: actions/setup-python@v5
       with:
         python-version: 3.12
-    - name: Figure out IP
-      run: |
-        curl https://ipinfo.io
-    - name: Try curl to get to opensource.org
-      run: |
-        curl -I https://opensource.org/ \
-          -v \
-          --http1.1 \
-          -H "Host: opensource.org" \
-          -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36" \
-          -H "Accept-Encoding: gzip, deflate" \
-          -H "Accept: */*" \
-          -H "Connection: keep-alive"
-
     - name: Install Requirements
       run: |
         pip install --upgrade pip
diff --git a/conf.py b/conf.py
index d18ec10..936f28e 100644
--- a/conf.py
+++ b/conf.py
@@ -2,9 +2,10 @@
 # Here it is useful to allow the configuration to be maintained elsewhere
 # from starterkit_ci.sphinx_config import *  # NOQA
 
-import http.client
+import os
+
+IN_GITHUB_ACTIONS_CI = os.environ.get("GITHUB_ACTIONS", False)
 
-# http.client.HTTPConnection.debuglevel = 1
 
 project = "Key4hep"
 copyright = "2020, Key4hep"
@@ -39,18 +40,13 @@
     ".md": "markdown",
 }
 
-# html_static_path += [
-#    f'_static',
-# ]
-
-
-# linkcheck_request_headers = {
-#     "https://opensource.org": {"User-Agent": "Python-urllib/3.12"}
-# }
-
 linkcheck_ignore = [
     r"https://twiki.cern.ch/twiki/bin/view",  # TWikis might need login
 ]
+if IN_GITHUB_ACTIONS_CI:
+    linkcheck_ignore.append(
+        r"https://opensource.org",  # cloudflare blocks requests from github actions
+    )
 
 
 myst_heading_anchors = 3