diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 73ab9e4d6..a11658254 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.7.0-3"
-export PIKA_PACKAGE_NAME="python-pypushflow"
+export PIKA_PACKAGE_VERSION="18.1.1-1"
+export PIKA_PACKAGE_NAME="opencl-clang-18"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"