diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ac23a0148..5f609fcfc 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.8.1-4"
-export PIKA_PACKAGE_NAME="pkgconf"
+export PIKA_PACKAGE_VERSION="1.2.1-dmo1"
+export PIKA_PACKAGE_NAME="stgpytools-dmo"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"