diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b1ea2bb09..4075fd398 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.04+git20250103-1"
-export PIKA_PACKAGE_NAME="xpdf"
+export PIKA_PACKAGE_VERSION="1.20-3"
+export PIKA_PACKAGE_NAME="python-stdnum"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"