diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 09201a8c9..3939bb63a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.9.0-2"
-export PIKA_PACKAGE_NAME="ecbuild"
+export PIKA_PACKAGE_VERSION="3.4.0+ds-2"
+export PIKA_PACKAGE_NAME="promod3"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"