diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b70ddcc03..8604ac449 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.11.1-6"
-export PIKA_PACKAGE_NAME="mpb"
+export PIKA_PACKAGE_VERSION="1.2+20240521-1"
+export PIKA_PACKAGE_NAME="python-aristaproto"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"