diff --git a/service/pool/Main.mo b/service/pool/Main.mo
index c282a205..7bce335f 100644
--- a/service/pool/Main.mo
+++ b/service/pool/Main.mo
@@ -135,7 +135,7 @@ shared (creator) actor class Self(opt_params : ?Types.InitParams) = this {
         await getExpiredCanisterInfo(origin);
     };
 
-    type InstallConfig = { profiling: Bool; is_whitelisted: Bool; origin: Text };
+    type InstallConfig = { profiling: Bool; is_whitelisted: Bool; origin: Text; referrer: ?Text };
     public shared ({ caller }) func installCode(info : Types.CanisterInfo, args : Types.InstallArgs, install_config : InstallConfig) : async Types.CanisterInfo {
         if (install_config.origin == "") {
             throw Error.reject "Please specify an origin";
diff --git a/src/build.ts b/src/build.ts
index b88caff2..7447aee9 100644
--- a/src/build.ts
+++ b/src/build.ts
@@ -196,6 +196,7 @@ async function install(
     profiling,
     is_whitelisted: false,
     origin,
+    referrer: document.referrer || (window.opener && "(opener)") || undefined,
   };
   const new_info = await backend.installCode(
     canisterInfo,