diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 89dc56071..b7fff1518 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.5.1.1-5"
-export PIKA_PACKAGE_NAME="haskell-tar"
+export PIKA_PACKAGE_VERSION="9.5.0-1"
+export PIKA_PACKAGE_NAME="proj"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"