diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index 63e20a8c7..2e530ae52 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -840,6 +840,8 @@ static void opServe(Strings opFlags, Strings opArgs)
         settings.buildTimeout = readInt(in);
         if (GET_PROTOCOL_MINOR(clientVersion) >= 2)
             settings.maxLogSize = readInt(in);
+        if (GET_PROTOCOL_MINOR(clientVersion) >= 3)
+            settings.set("build-repeat", std::to_string(readInt(in)));
     };
 
     while (true) {
diff --git a/src/nix-store/serve-protocol.hh b/src/nix-store/serve-protocol.hh
index c4e2a3703..f8cc9a4b6 100644
--- a/src/nix-store/serve-protocol.hh
+++ b/src/nix-store/serve-protocol.hh
@@ -5,7 +5,7 @@ namespace nix {
 #define SERVE_MAGIC_1 0x390c9deb
 #define SERVE_MAGIC_2 0x5452eecb
 
-#define SERVE_PROTOCOL_VERSION 0x202
+#define SERVE_PROTOCOL_VERSION 0x203
 #define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
 #define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)