diff --git a/pika-build-config/v3.sh b/pika-build-config/v3.sh
index 1717ac73b..6773f228a 100644
--- a/pika-build-config/v3.sh
+++ b/pika-build-config/v3.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="18.0.0-4"
-export PIKA_PACKAGE_NAME="halide"
+export PIKA_PACKAGE_VERSION="15.1.0-2"
+export PIKA_PACKAGE_NAME="ocaml-uucd"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b1"