fix

Signed-off-by: Shikugawa <[email protected]>
envoyproxy · Jul 1, 2020 · a5d361d · a5d361d
1 parent f9cc356
commit a5d361d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/envoy/common/resource.h b/include/envoy/common/resource.h
@@ -2,6 +2,8 @@
 
 #include "envoy/common/pure.h"
 
+#include "absl/types/optional.h"
+
 #pragma once
 
 namespace Envoy {