diff --git a/tools/gn_args.py b/tools/gn_args.py
index 6ad60c8f4..8658d345d 100644
--- a/tools/gn_args.py
+++ b/tools/gn_args.py
@@ -457,11 +457,11 @@ def LinuxSysrootExists(cpu):
   # CPU-specific sysroot directory names.
   # Should match the values in build/config/sysroot.gni.
   if cpu == 'x86':
-    sysroot_name = 'debian_stretch_i386-sysroot'
+    sysroot_name = 'debian_sid_i386-sysroot'
   elif cpu == 'x64':
-    sysroot_name = 'debian_stretch_amd64-sysroot'
+    sysroot_name = 'debian_sid_amd64-sysroot'
   elif cpu == 'arm':
-    sysroot_name = 'debian_stretch_arm-sysroot'
+    sysroot_name = 'debian_sid_arm-sysroot'
   else:
     raise Exception('Unrecognized sysroot CPU: %s' % cpu)