diff --git a/pika-build-config/amd64.sh b/pika-build-config/amd64.sh
index 513be2b12..61c596d67 100644
--- a/pika-build-config/amd64.sh
+++ b/pika-build-config/amd64.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.7.2+dfsg-1"
-export PIKA_PACKAGE_NAME="qt6-virtualkeyboard"
+export PIKA_PACKAGE_VERSION="5.15.15-1"
+export PIKA_PACKAGE_NAME="qtserialport-opensource-src"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b2"