diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 6948e8ae3..2540ec88e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="13.00.00-1"
-export PIKA_PACKAGE_NAME="c++-annotations"
+export PIKA_PACKAGE_VERSION="1.1+dfsg1-1"
+export PIKA_PACKAGE_NAME="pympler"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b3"