diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a5da03b52..15a261588 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.1.2.0-1"
-export PIKA_PACKAGE_NAME="haskell-vector-hashtables"
+export PIKA_PACKAGE_VERSION="0.2.1-4"
+export PIKA_PACKAGE_NAME="haskell-interpolate"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b3"