diff --git a/Dockerfile b/Dockerfile
index 1752c3c3a..1e25f3e4a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,9 @@
 # This recipe is pulled from: https://stackoverflow.com/a/33601894
 
 # Parent Dockerfile https://github.com/docker-library/mongo/blob/982328582c74dd2f0a9c8c77b84006f291f974c3/3.0/Dockerfile
-FROM mongo:6.0.1
+ARG MONGODB='6.0.1'
+
+FROM mongo:${MONGODB}
 
 # Modify child mongo to use /data/db2 as dbpath (because /data/db wont persist the build)
 COPY ./docker/mongodb.conf /etc
diff --git a/README.md b/README.md
index c11824939..b2324c4a4 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,14 @@ docker build -t 5e-database .
 docker run -i -t 5e-database:latest
 ```
 
+During the `build` step, you can specify the version of MongoDB to use with the following:
+
+```bash
+docker build --build-arg MONGODB=4.4 -t 5e-database .
+```
+
+*MongoDB v4.4 is the latest version that does not require the AVX instruction set to run.*
+
 ### Without Docker
 
 First you need to make sure you have [MongoDB installed locally.](https://docs.mongodb.com/manual/installation/)