1 files changed, 4 insertions, 0 deletions
diff --git a/src/mongo/s/commands/cluster_is_master_cmd.cpp b/src/mongo/s/commands/cluster_is_master_cmd.cpp
index 778ec8aae17..cab3fca4f18 100644
--- a/src/mongo/s/commands/cluster_is_master_cmd.cpp
+++ b/src/mongo/s/commands/cluster_is_master_cmd.cpp
@@ -59,6 +59,10 @@ class CmdIsMaster : public BasicCommandWithReplyBuilderInterface {
 public:
     CmdIsMaster() : BasicCommandWithReplyBuilderInterface("isMaster", "ismaster") {}
 
+    const std::set<std::string>& apiVersions() const {
+        return kApiVersions1;
+    }
+
     bool supportsWriteConcern(const BSONObj& cmd) const override {
         return false;
     }