diff --git a/tooling/Containerfile b/tooling/Containerfile
index 02643e1..6b86147 100644
--- a/tooling/Containerfile
+++ b/tooling/Containerfile
@@ -1,6 +1,6 @@
 FROM docker.io/alpine:3.17
 
-RUN apk add --no-cache nodejs npm lua5.1
+RUN apk add --no-cache nodejs npm lua5.1 icu-data-full
 
 # https://gitea.nulo.in/Nulo/openring/releases/tag/1.0.1-nulo-sitio-2
 RUN wget -nv -O /bin/openring https://gitea.nulo.in/attachments/3ddb2799-3af7-4239-a7fd-9d31670aefb8 && \