diff --git a/skib_application_dockerfile b/skib_application_dockerfile
index 8ec9f36..d80e413 100644
--- a/skib_application_dockerfile
+++ b/skib_application_dockerfile
@@ -25,6 +25,7 @@ RUN apk --no-cache add \
     php83-pcntl \
     php83-posix \
     php83-sockets \
+    php83-bcmath \
     && rm -rf /var/cache/apk/*
 
 RUN echo "Europe/Berlin" > /etc/timezone