diff --git a/tools/aapt2/SdkConstants.cpp b/tools/aapt2/SdkConstants.cpp
index b4b6ff1daaaad..304bc4925831f 100644
--- a/tools/aapt2/SdkConstants.cpp
+++ b/tools/aapt2/SdkConstants.cpp
@@ -27,7 +27,7 @@ namespace aapt {
 
 static ApiVersion sDevelopmentSdkLevel = 10000;
 static const auto sDevelopmentSdkCodeNames = std::unordered_set<StringPiece>({
-    "Q", "R"
+    "Q", "R", "S"
 });
 
 static const std::vector<std::pair<uint16_t, ApiVersion>> sAttrIdMap = {