diff --git a/marlowe-playground-client/spago.dhall b/marlowe-playground-client/spago.dhall
index 678b51546..c6b65db8e 100644
--- a/marlowe-playground-client/spago.dhall
+++ b/marlowe-playground-client/spago.dhall
@@ -41,6 +41,7 @@
   , "integers"
   , "js-object"
   , "js-timers"
+  , "js-uri"
   , "json-helpers"
   , "lists"
   , "markdown"