diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 48d64f33a..a7611b8fe 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.4.4-13"
-export PIKA_PACKAGE_NAME="haskell-data-binary-ieee754"
+export PIKA_PACKAGE_VERSION="0.6.3.0-3"
+export PIKA_PACKAGE_NAME="haskell-zlib"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"