diff --git a/rtc_tools/testing/build_apprtc.py b/rtc_tools/testing/build_apprtc.py
index e93b7e06c7..d601357459 100755
--- a/rtc_tools/testing/build_apprtc.py
+++ b/rtc_tools/testing/build_apprtc.py
@@ -55,6 +55,7 @@ def main(argv):
     golang_env = os.environ.copy()
     golang_env['GOROOT'] = go_root_dir
     golang_env['GOPATH'] = golang_workspace
+    golang_env['GO111MODULE'] = 'off'
     collider_out = os.path.join(
         golang_workspace, 'collidermain' + utils.GetExecutableExtension())
     subprocess.check_call(
diff --git a/rtc_tools/testing/golang/mac/go.tar.gz.sha1 b/rtc_tools/testing/golang/mac/go.tar.gz.sha1
index ec3a4af76c..399edd5cd8 100644
--- a/rtc_tools/testing/golang/mac/go.tar.gz.sha1
+++ b/rtc_tools/testing/golang/mac/go.tar.gz.sha1
@@ -1 +1 @@
-94422c2571e68e7725b9fb878c37e7de47a2351a
\ No newline at end of file
+e13521f5d61465fe873371b266bc3ceafcb13562
\ No newline at end of file