diff --git a/Dockerfile b/Dockerfile
index 8e4e9ac..c2fb25d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,17 @@
-# Stage 1 — compile sqlite-zstd against the container's own SQLite
+# Stage 1 — compile sqlite-zstd + SQLite 3.49.1
 FROM ghcr.io/astral-sh/uv:python3.13-trixie-slim AS sqlite-zstd-builder
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    curl git libsqlite3-dev libzstd-dev pkg-config build-essential ca-certificates && \
+    curl unzip git libzstd-dev pkg-config build-essential ca-certificates && \
     rm -rf /var/lib/apt/lists/*
 
+# Compile SQLite 3.49.1 as a shared library so the runtime image can use it
+RUN curl -fsSL https://www.sqlite.org/2025/sqlite-amalgamation-3490100.zip -o /tmp/sqlite.zip && \
+    unzip /tmp/sqlite.zip -d /tmp/ && \
+    cd /tmp/sqlite-amalgamation-3490100 && \
+    gcc -O2 -shared -fPIC -o /usr/local/lib/libsqlite3.so.0 sqlite3.c -ldl -lpthread
+
+# Install Rust and compile sqlite-zstd (uses bundled SQLite 3.49.1 — no patching needed)
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable --profile minimal
 ENV PATH="/root/.cargo/bin:${PATH}"
 
@@ -19,13 +26,16 @@ FROM ghcr.io/astral-sh/uv:python3.13-trixie-slim
 RUN apt-get update && apt-get install -y --no-install-recommends libzstd1 && \
     rm -rf /var/lib/apt/lists/*
 
+# Replace system SQLite 3.46.1 with 3.49.1 so it matches the extension
+COPY --from=sqlite-zstd-builder /usr/local/lib/libsqlite3.so.0 /usr/local/lib/libsqlite3.so.0
+RUN echo "/usr/local/lib" > /etc/ld.so.conf.d/local.conf && ldconfig
+
 COPY --from=sqlite-zstd-builder /usr/local/lib/libsqlite_zstd.so /usr/local/lib/libsqlite_zstd.so
 
 # Install app
 COPY . /app
 WORKDIR /app
 
-# Install dependencies
 RUN uv sync --no-config --frozen --compile-bytecode
 
 EXPOSE 8000