diff --git a/Dockerfile b/Dockerfile
index c4c85e4..f454d22 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,16 +10,12 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /src
 
-# Copy go.mod and go.sum first for better layer caching
-COPY go.mod go.sum ./
-
-# Download and vendor dependencies
-RUN go mod download
-RUN go mod vendor
-
-# Copy source code
+# Copy everything
 COPY . .
 
+# Vendor dependencies (must be after copying source)
+RUN go mod download && go mod vendor
+
 # Build the binary with CGO enabled (required for sqlite3)
 RUN CGO_ENABLED=1 GOOS=linux go build -o /routewatch ./cmd/routewatch