diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 0e7819a48..976269165 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.5-2"
-export PIKA_PACKAGE_NAME="haskell-dimensional"
+export PIKA_PACKAGE_VERSION="0.99.7-2"
+export PIKA_PACKAGE_NAME="libopaque"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"