diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 3880f20d1..df26f4e6b 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.85-19"
-export PIKA_PACKAGE_NAME="haskell-ifelse"
+export PIKA_PACKAGE_VERSION="0.3.1-3"
+export PIKA_PACKAGE_NAME="haskell-half"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"