diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 50ac3c866..e1c0a01b9 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.9.6-1"
-export PIKA_PACKAGE_NAME="rust-gdk4-x11-sys"
+export PIKA_PACKAGE_VERSION="0.1.5-1"
+export PIKA_PACKAGE_NAME="rust-unescaper"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"