diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 37ace93ba..dda6feac2 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0~20240127.git2226aa3-1"
-export PIKA_PACKAGE_NAME="cl-uax-15"
+export PIKA_PACKAGE_VERSION="4.9.1+ds-1"
+export PIKA_PACKAGE_NAME="gap-io"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"