diff --git a/dockerfiles/ud3tn b/dockerfiles/ud3tn
index c6e224b..70975ec 100644
--- a/dockerfiles/ud3tn
+++ b/dockerfiles/ud3tn
@@ -6,6 +6,6 @@ RUN cd /ud3tn && ARCH=x86-64 make posix
 
 FROM alpine
 RUN apk update
-RUN apk add coreutils sqlite-dev
+RUN apk add coreutils sqlite-dev jansson-dev
 COPY --from=0 /ud3tn/build/posix/ud3tn /ud3tn
 ENTRYPOINT [ "/ud3tn" ]