diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 7813c3db4..c5931a5ac 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.0.3-1"
-export PIKA_PACKAGE_NAME="ocaml-x509"
+export PIKA_PACKAGE_VERSION="0.1.1.2-5"
+export PIKA_PACKAGE_NAME="haskell-primitive-unaligned"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"