diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 631b50668..74bd51020 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="20240923-2"
-export PIKA_PACKAGE_NAME="coq-unimath"
+export PIKA_PACKAGE_VERSION="6.6.3-3"
+export PIKA_PACKAGE_NAME="tortoisehg"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"