diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 011a285b3..dccd38631 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.6.8+dfsg-2"
-export PIKA_PACKAGE_NAME="roundcube"
+export PIKA_PACKAGE_VERSION="0.1.13-1"
+export PIKA_PACKAGE_NAME="rust-unicode-width"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"