diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index fe99c3757..39dbb3ad5 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.4.0-2"
-export PIKA_PACKAGE_NAME="networking-baremetal"
+export PIKA_PACKAGE_VERSION="0.3-9"
+export PIKA_PACKAGE_NAME="haskell-map-syntax"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"