diff --git a/.devcontainer/Dockerfile.base b/.devcontainer/Dockerfile.base
index 382934e4f..42dcd3ec3 100644
--- a/.devcontainer/Dockerfile.base
+++ b/.devcontainer/Dockerfile.base
@@ -17,7 +17,7 @@ RUN apt-get update && \
     build-essential gnupg2 tar git zsh libssl-dev zlib1g-dev libyaml-dev  \
     imagemagick libjpeg-dev libpng-dev libtiff-dev libwebp-dev \
     tzdata \
-    vim git-flow tig
+    vim git-flow tig tmux
 
 # Install postgresql-client-16
 RUN curl -1sLf 'https://www.postgresql.org/media/keys/ACCC4CF8.asc' | gpg --dearmor -o /etc/apt/trusted.gpg.d/postgresql.gpg && \