diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 5b8d8df39..3403de341 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.6.9-3"
-export PIKA_PACKAGE_NAME="haskell-x509-store"
+export PIKA_PACKAGE_VERSION="0.4.2.4-4"
+export PIKA_PACKAGE_NAME="haskell-base64"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"