diff --git a/debian/Dockerfile b/debian/Dockerfile
index 4f4d285..f47c050 100644
--- a/debian/Dockerfile
+++ b/debian/Dockerfile
@@ -6,7 +6,7 @@ ENV DEBIAN_FRONTEND="noninteractive"
 ARG PACKAGES=${PACKAGES:-sudo}
 RUN apt update -qq && apt install --no-install-recommends -y $PACKAGES
 
-RUN useradd -m -u 1000 regolith
+RUN useradd -m -u 1000 regolith && adduser regolith sudo
 USER regolith
 
 WORKDIR /build
diff --git a/ubuntu/Dockerfile b/ubuntu/Dockerfile
index 71706b7..a61adde 100644
--- a/ubuntu/Dockerfile
+++ b/ubuntu/Dockerfile
@@ -7,7 +7,7 @@ ARG PACKAGES=${PACKAGES:-sudo}
 RUN apt update -qq && apt install --no-install-recommends -y $PACKAGES
 
 RUN if id ubuntu >/dev/null 2>&1; then userdel -r ubuntu; fi
-RUN useradd -m -u 1000 regolith
+RUN useradd -m -u 1000 regolith && adduser regolith sudo
 USER regolith
 
 WORKDIR /build