diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c95d1918d..545be575d 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.7.0-31"
-export PIKA_PACKAGE_NAME="gcl27"
+export PIKA_PACKAGE_VERSION="2.5.2+dfsg-4"
+export PIKA_PACKAGE_NAME="pycoqc"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"