diff --git a/pika-build-config/v3.sh b/pika-build-config/v3.sh
index 741ae8db0..0fc69e80d 100644
--- a/pika-build-config/v3.sh
+++ b/pika-build-config/v3.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.3.8+dfsg-3"
-export PIKA_PACKAGE_NAME="python-ptk"
+export PIKA_PACKAGE_VERSION="7.1.1+dfsg1-1exp1"
+export PIKA_PACKAGE_NAME="sundials"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b1"