diff --git a/scripts/ci/bootstrap-apt.sh b/scripts/ci/bootstrap-apt.sh
index 178af52..cb932fd 100755
--- a/scripts/ci/bootstrap-apt.sh
+++ b/scripts/ci/bootstrap-apt.sh
@@ -27,6 +27,7 @@ apt-get install -y --no-install-recommends \
   libtool-bin \
   m4 \
   ncat \
+  regina-rexx \
   reprepro \
   sudo \
   time \