diff --git a/tools/code_coverage_tools/taskcluster.py b/tools/code_coverage_tools/taskcluster.py
index 6bf7a74ce..03f91d190 100644
--- a/tools/code_coverage_tools/taskcluster.py
+++ b/tools/code_coverage_tools/taskcluster.py
@@ -5,7 +5,6 @@
 
 import copy
 import os
-import re
 
 import structlog
 import taskcluster
@@ -20,26 +19,6 @@
 TASKCLUSTER_DATE_FORMAT = "%Y-%m-%dT%H:%M:%S.%fZ"
 
 
-def read_hosts():
-    """
-    Read /etc/hosts to get hostnames
-    on a Nix env (used for taskclusterProxy)
-    Only reads ipv4 entries to avoid duplicates
-    """
-    out = {}
-    regex = re.compile(r"([\w:\-\.]+)")
-    for line in open("/etc/hosts").readlines():
-        if ":" in line:  # only ipv4
-            continue
-        x = regex.findall(line)
-        if not x:
-            continue
-        ip, names = x[0], x[1:]
-        out.update(dict(zip(names, [ip] * len(names))))
-
-    return out
-
-
 class TaskclusterConfig(object):
     """
     Local configuration used to access Taskcluster service and objects
@@ -90,16 +69,8 @@ def auth(self, client_id=None, access_token=None):
             self.options["rootUrl"] = "https://taskcluster.net"
 
         else:
-            # Get taskcluster proxy host
-            # as /etc/hosts is not used in the Nix image (?)
-            hosts = read_hosts()
-            if "taskcluster" not in hosts:
-                raise Exception("Missing taskcluster in /etc/hosts")
-
-            # Load secrets from TC task context
             # with taskclusterProxy
-            root_url = f"http://{hosts['taskcluster']}"
-
+            root_url = "http://taskcluster"
             logger.info("Taskcluster Proxy enabled", url=root_url)
             self.options["rootUrl"] = root_url