diff --git a/kontist/Dockerfile b/kontist/Dockerfile
index 2194187..ac7fa3e 100644
--- a/kontist/Dockerfile
+++ b/kontist/Dockerfile
@@ -1,5 +1,5 @@
 FROM node:22-slim
-RUN apt-get update && apt-get install -y --no-install-recommends git && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y --no-install-recommends git ca-certificates && rm -rf /var/lib/apt/lists/*
 RUN git clone https://github.com/tobiasendres-dev/kontist-mcp.git /app/kontist-mcp
 WORKDIR /app/kontist-mcp
 RUN npm install