diff --git a/pika-build-config/v3.sh b/pika-build-config/v3.sh
index d61cf0459..4c1511824 100644
--- a/pika-build-config/v3.sh
+++ b/pika-build-config/v3.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.8.0-1"
-export PIKA_PACKAGE_NAME="rust-unicase"
+export PIKA_PACKAGE_VERSION="0.3.1-1"
+export PIKA_PACKAGE_NAME="rust-constant-time-eq"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b1"