diff --git a/projects/ndpi/Dockerfile b/projects/ndpi/Dockerfile
index 2cef81552..fafb08154 100644
--- a/projects/ndpi/Dockerfile
+++ b/projects/ndpi/Dockerfile
@@ -15,7 +15,8 @@
 ################################################################################
 
 FROM gcr.io/oss-fuzz-base/base-builder
-RUN apt-get update && apt-get install -y make autoconf automake autogen pkg-config libtool flex bison libjson-c-dev
+RUN apt-get update && apt-get install -y make autoconf automake autogen pkg-config libtool flex bison cmake
+RUN git clone --depth 1 https://github.com/json-c/json-c.git json-c
 RUN git clone --depth 1 https://github.com/ntop/nDPI.git ndpi
 ADD https://www.tcpdump.org/release/libpcap-1.9.1.tar.gz libpcap-1.9.1.tar.gz
 COPY build.sh $SRC/
diff --git a/projects/ndpi/build.sh b/projects/ndpi/build.sh
index a48c042e9..cf844d1f8 100755
--- a/projects/ndpi/build.sh
+++ b/projects/ndpi/build.sh
@@ -23,6 +23,13 @@ make -j$(nproc)
 make install
 cd ..
 
+cd json-c
+mkdir build
+cd build
+cmake -DBUILD_SHARED_LIBS=OFF ..
+make install
+cd ../..
+
 # build project
 cd ndpi
 sh autogen.sh