diff --git a/sdk/Dockerfile b/sdk/Dockerfile
index 1a6a677..aae7438 100644
--- a/sdk/Dockerfile
+++ b/sdk/Dockerfile
@@ -1,11 +1,11 @@
 FROM alpine:3.19.1
 LABEL authors="servostar"
-LABEL version="0.2.2"
+LABEL version="0.2.3"
 LABEL description="base image for building the gemstone programming language compiler"
 LABEL website="https://github.com/Servostar/gemstone"
 
 # install dependencies
-RUN apk add build-base gcc make cmake bison flex git python3
+RUN apk add build-base gcc make cmake bison flex git python3 graphviz
 
 # create user for build
 RUN adduser --disabled-password lorang