diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 3981af54d..c55568556 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.25.1-1"
-export PIKA_PACKAGE_NAME="ocamlgsl"
+export PIKA_PACKAGE_VERSION="1.50.1-1"
+export PIKA_PACKAGE_NAME="tmuxp"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"