diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 24089359f..17166eff0 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.6-1"
-export PIKA_PACKAGE_NAME="python-pyramid-tm"
+export PIKA_PACKAGE_VERSION="1.2.0-6"
+export PIKA_PACKAGE_NAME="jmock"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"