diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 6bb58acae..bda9116a4 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.9.4-1"
-export PIKA_PACKAGE_NAME="haskell-language-c"
+export PIKA_PACKAGE_VERSION="1:2.49.20241103.git386dcd7-1"
+export PIKA_PACKAGE_NAME="clisp"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"