diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 399a6e156..3c9518809 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.25-1"
-export PIKA_PACKAGE_NAME="hscolour"
+export PIKA_PACKAGE_VERSION="0.5.1-12"
+export PIKA_PACKAGE_NAME="haskell-data-memocombinators"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"