diff --git a/Dockerfile.backend b/Dockerfile.backend
index 6a2e061..23a1d91 100644
--- a/Dockerfile.backend
+++ b/Dockerfile.backend
@@ -1,6 +1,6 @@
 FROM alpine:3.22
 
-RUN apk add --no-cache ca-certificates
+RUN apk add --no-cache ca-certificates ffmpeg
 
 COPY backend/evening_detective_server /usr/local/bin/evening_detective_server
 
diff --git a/backend/evening_detective_server b/backend/evening_detective_server
index f0b18d5..d5d61d5 100755
Binary files a/backend/evening_detective_server and b/backend/evening_detective_server differ