diff --git a/Dockerfile b/Dockerfile
index df0b92f..adda5fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,10 @@
 FROM codercom/code-server:latest
 LABEL maintainer="himself@stevenpolley.net"
 
+# Define version of development environment components
+ARG GO_VERSION=1.15.3
+ARG HUGO_VERSION=0.76.5
+
 # Update packages
 RUN sudo apt update && \
     sudo apt upgrade -y && \
@@ -9,18 +13,18 @@ RUN sudo apt update && \
     sudo apt autoremove -y
 
 # Install Go
-RUN curl -L -O https://dl.google.com/go/go1.15.3.linux-amd64.tar.gz && \
-    tar xvfz go1.15.3.linux-amd64.tar.gz && \
+RUN curl -L -O https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz && \
+    tar xvfz go${GO_VERSION}.linux-amd64.tar.gz && \
     sudo chown -R root:root ./go && \
     sudo mv go /usr/local && \
-    rm -f go1.15.3.linux-amd64.tar.gz
+    rm -f go${GO_VERSION}.linux-amd64.tar.gz
 
 # Install Hugo
-RUN curl -L -O https://github.com/gohugoio/hugo/releases/download/v0.76.5/hugo_0.76.5_Linux-64bit.tar.gz && \
-    tar xvfz hugo_0.76.5_Linux-64bit.tar.gz && \
+RUN curl -L -O https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_VERSION}_Linux-64bit.tar.gz && \
+    tar xvfz hugo_${HUGO_VERSION}_Linux-64bit.tar.gz && \
     sudo chown -R root:root ./hugo && \
     sudo mv hugo /usr/local/bin && \
-    rm -f hugo_0.76.5_Linux-64bit.tar.gz LICENSE README.md
+    rm -f hugo_${HUGO_VERSION}_Linux-64bit.tar.gz LICENSE README.md
 
 # Start code-server
 ENTRYPOINT ["/usr/bin/entrypoint.sh", "--bind-addr", "0.0.0.0:8080", "."]