diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c1a56630a..837fb2a28 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.2.10-5"
-export PIKA_PACKAGE_NAME="libgda5"
+export PIKA_PACKAGE_VERSION="5.1-17"
+export PIKA_PACKAGE_NAME="gcpegg"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"