diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 47287b76f..735b743f6 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.0.0-3"
-export PIKA_PACKAGE_NAME="mathcomp-real-closed"
+export PIKA_PACKAGE_VERSION="1.4+8.19-2"
+export PIKA_PACKAGE_NAME="coq-mtac2"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"