diff --git a/acceptance/bin/callserver.py b/acceptance/bin/callserver.py
index 48a389b310..7c17a861f3 100755
--- a/acceptance/bin/callserver.py
+++ b/acceptance/bin/callserver.py
@@ -7,7 +7,7 @@
 
 env = {}
 for key, value in os.environ.items():
-    if len(value) > 1000:
+    if len(value) > 10_000:
         sys.stderr.write(f"Dropping key={key} value len={len(value)}\n")
         continue
     env[key] = value