diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a71c1f40c..8db7612d7 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.21.6-1"
-export PIKA_PACKAGE_NAME="petsc4py"
+export PIKA_PACKAGE_VERSION="55.0.0+ds-1"
+export PIKA_PACKAGE_NAME="ojalgo"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"