diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ce9c296e3..22376b28e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="67.0.8"
-export PIKA_PACKAGE_NAME="trydiffoscope"
+export PIKA_PACKAGE_VERSION="1.5-3"
+export PIKA_PACKAGE_NAME="pymailgunner"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"