diff --git a/cc/config/global.go b/cc/config/global.go
index bae5555..0a09fa4 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -126,8 +126,8 @@
 
 	// prebuilts/clang default settings.
 	ClangDefaultBase         = "prebuilts/clang/host"
-	ClangDefaultVersion      = "clang-r370808"
-	ClangDefaultShortVersion = "10.0.1"
+	ClangDefaultVersion      = "clang-r365631b"
+	ClangDefaultShortVersion = "9.0.7"
 
 	// Directories with warnings from Android.bp files.
 	WarningAllowedProjects = []string{