diff --git a/Dockerfile b/Dockerfile
index 21d0aac..5086e5e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,17 +3,16 @@
 # ===================================================================
 FROM python:3.12-slim-bookworm AS builder
 
-# Install build dependencies for mysqlclient and other packages
+# Install build dependencies for PostgreSQL and other packages
 RUN apt-get update && apt-get install -y --no-install-recommends \
     gcc \
-    default-libmysqlclient-dev \
-    pkg-config \
+    libpq-dev \
     && rm -rf /var/lib/apt/lists/*
 
 # Install Python dependencies
 COPY requirements.txt /tmp/
 RUN pip install --user --no-cache-dir -r /tmp/requirements.txt \
-    && pip install --user --no-cache-dir mysqlclient gunicorn
+    && pip install --user --no-cache-dir gunicorn
 
 # ===================================================================
 # Stage 2: Runtime - Minimal production image
@@ -22,7 +21,7 @@ FROM python:3.12-slim-bookworm
 
 # Install runtime dependencies only
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    default-mysql-client \
+    postgresql-client \
     curl \
     && rm -rf /var/lib/apt/lists/*