diff --git a/Dockerfile b/Dockerfile
index 59d78da..383e969 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:latest
 
-RUN apk add --no-cache ca-certificates krb5-libs libgcc libintl libssl3 libstdc++ zlib
+RUN apk add --no-cache ca-certificates krb5-libs libgcc libintl libssl3 libstdc++ zlib libicu
 RUN apk --no-cache add openjdk11
 RUN apk add --no-cache \
     ca-certificates \