diff --git a/docker/Dockerfile b/docker/Dockerfile
index 165b1c0e..aff083bd 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -117,7 +117,8 @@ RUN apk -U add \
         mandoc \
         mosquitto \
         popt \
-        soxr && \
+        soxr \
+        curl && \
     rm -rfv /lib/apk/db/* && \
     rm -rfv /etc/avahi/services/*.service && \
     addgroup shairport-sync && \
diff --git a/docker/classic/Dockerfile b/docker/classic/Dockerfile
index ef26d5d9..33ce58ed 100644
--- a/docker/classic/Dockerfile
+++ b/docker/classic/Dockerfile
@@ -71,7 +71,8 @@ RUN apk -U add \
         mbedtls \
         mosquitto \
         popt \
-        soxr
+        soxr \
+        curl
 
 # Copy build files.
 COPY --from=builder /shairport-sync/build/install/usr/local/bin/shairport-sync /usr/local/bin/shairport-sync