diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 977ca39b2..33f10b3a1 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.6.1-3"
-export PIKA_PACKAGE_NAME="sleef"
+export PIKA_PACKAGE_VERSION="4.11c~ds-1"
+export PIKA_PACKAGE_NAME="wp2latex"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"