diff --git a/sandbox/Dockerfile b/sandbox/Dockerfile
index db6f550a..752d1d8d 100644
--- a/sandbox/Dockerfile
+++ b/sandbox/Dockerfile
@@ -14,6 +14,13 @@ RUN apt-get update && apt-get install -y \
     python3 python3-venv python3-pip \
     # JSON parsing
     jq \
+    && rm -rf /var/lib/apt/lists/* \
+    # GitHub CLI
+    && curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg \
+       -o /usr/share/keyrings/githubcli-archive-keyring.gpg \
+    && echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" \
+       > /etc/apt/sources.list.d/github-cli.list \
+    && apt-get update && apt-get install -y gh \
     && rm -rf /var/lib/apt/lists/*
 
 # Create non-root user