diff --git a/pika-build-config/i386.sh b/pika-build-config/i386.sh
index cf303964b..585c41c5c 100755
--- a/pika-build-config/i386.sh
+++ b/pika-build-config/i386.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.9-2"
-export PIKA_PACKAGE_NAME="sed"
+export PIKA_PACKAGE_VERSION="3.1.11-2"
+export PIKA_PACKAGE_NAME="imath"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"