diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b76257346..c342834f8 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.9.4-3"
-export PIKA_PACKAGE_NAME="haskell-fmlist"
+export PIKA_PACKAGE_VERSION="0.5.3-3"
+export PIKA_PACKAGE_NAME="haskell-groups"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"