diff --git a/images/edge/Dockerfile b/images/edge/Dockerfile
index e354a6c..73e6e8d 100644
--- a/images/edge/Dockerfile
+++ b/images/edge/Dockerfile
@@ -1,9 +1,11 @@
-FROM caian/sample-devcontainer:0.2.1-full
+FROM caian/sample-devcontainer:0.3.0-full
 
 ARG DOCKER_DEFAULT_USER=turing
 ENV DOCKER_DEFAULT_USER $DOCKER_DEFAULT_USER
 
 USER ${DOCKER_DEFAULT_USER}
 
-RUN brew update \
+# just upgrade all brew packages
+RUN eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)" \
+    && brew update \
     && brew upgrade
diff --git a/images/full/Dockerfile b/images/full/Dockerfile
index b5b798a..df8c386 100644
--- a/images/full/Dockerfile
+++ b/images/full/Dockerfile
@@ -1,4 +1,4 @@
-FROM caian/sample-devcontainer:0.2.1-bare
+FROM caian/sample-devcontainer:0.3.0-bare
 
 ARG DOCKER_DEFAULT_USER=turing
 ENV DOCKER_DEFAULT_USER $DOCKER_DEFAULT_USER