diff --git a/spark-qfs-swarm/build-images.sh b/spark-qfs-swarm/build-images.sh
index 30de7e7..055a7b9 100755
--- a/spark-qfs-swarm/build-images.sh
+++ b/spark-qfs-swarm/build-images.sh
@@ -12,7 +12,7 @@ b) DOCKER_BUILD_ARGS=${OPTARG};;
 esac
 done
 
-if [ -z "$DOCKER_ARGS" ]
+if [ -z "$DOCKER_BUILD_ARGS" ]
 then
 	echo "Building with default docker options"
 else
diff --git a/spark-qfs-swarm/jupyter-server/Dockerfile b/spark-qfs-swarm/jupyter-server/Dockerfile
index 56caba2..3683b57 100644
--- a/spark-qfs-swarm/jupyter-server/Dockerfile
+++ b/spark-qfs-swarm/jupyter-server/Dockerfile
@@ -7,6 +7,7 @@ FROM qfs-master:latest
 #
 
 ENV GRAPHFRAMES_VERSION 0.8.2-spark3.2-s_2.12
+ENV SPARK_NLP_VERSION spark-nlp-spark32_2.12:3.4.4
 
 USER root
 RUN apt-get install -y g++
diff --git a/spark-qfs-swarm/jupyter-server/start-jupyter.sh b/spark-qfs-swarm/jupyter-server/start-jupyter.sh
index efe505a..7712aa5 100644
--- a/spark-qfs-swarm/jupyter-server/start-jupyter.sh
+++ b/spark-qfs-swarm/jupyter-server/start-jupyter.sh
@@ -5,6 +5,6 @@ SHELL=/bin/bash \
     PYSPARK_DRIVER_PYTHON=jupyter \
     PYSPARK_DRIVER_PYTHON_OPTS="notebook --no-browser --port=7777 --notebook-dir=/home/spark/jupyter/notebooks --ip=0.0.0.0 --NotebookApp.password='' --NotebookApp.token='' --NotebookApp.iopub_data_rate_limit=1.0e10" \
     $SPARK_HOME/bin/pyspark \
-    --packages graphframes:graphframes:$GRAPHFRAMES_VERSION \
+    --packages graphframes:graphframes:$GRAPHFRAMES_VERSION,com.johnsnowlabs.nlp:$SPARK_NLP_VERSION \
     --repositories https://repos.spark-packages.org/ \
     --master spark://spark-master:7077
diff --git a/spark-qfs-swarm/worker-node/Dockerfile b/spark-qfs-swarm/worker-node/Dockerfile
index 092d7ff..596c012 100644
--- a/spark-qfs-swarm/worker-node/Dockerfile
+++ b/spark-qfs-swarm/worker-node/Dockerfile
@@ -19,7 +19,7 @@ ARG QFS_VERSION=2.2.4
 ARG SPARK_VERSION=3.2.1
 ARG HADOOP_MINOR_VERSION=2.7
 ARG HADOOP_VERSION=2.7.2
-ARG SCALA_VERSION=2.12.13
+ARG SCALA_VERSION=2.12.15
 
 RUN apt-get update \
  && apt-get install -y locales \
@@ -65,7 +65,7 @@ ENV QFS_LOGS_DIR /data/qfs/logs
 ENV LD_LIBRARY_PATH ${QFS_HOME}/lib
 ARG QFS_DOWNLOAD_URL="https://s3.amazonaws.com/quantcast-qfs/qfs-debian-9-${QFS_VERSION}-x86_64.tgz"
 RUN echo "Downloading QFS from : ${QFS_DOWNLOAD_URL}\n" \
-	&& curl -L --retry 3 \
+	&& curl -L --retry 3 -k \
 	     $QFS_DOWNLOAD_URL \
 	   | gunzip \
 	   | tar x -C /usr/ \
@@ -97,7 +97,7 @@ RUN mkdir -p /data/spark \
 
 # add python libraries useful in PySpark
 RUN python3 -mpip install matplotlib \
-	&& pip3 install pandas seaborn pyarrow
+	&& pip3 install pandas seaborn pyarrow spark-nlp
 
 # copy QFS and Spark configurations
 COPY ./qfs-conf/* $QFS_HOME/conf/
diff --git a/spark-qfs-swarm/worker-node/spark-conf/spark-defaults.conf b/spark-qfs-swarm/worker-node/spark-conf/spark-defaults.conf
index eb89b5b..98c9d7b 100644
--- a/spark-qfs-swarm/worker-node/spark-conf/spark-defaults.conf
+++ b/spark-qfs-swarm/worker-node/spark-conf/spark-defaults.conf
@@ -33,7 +33,7 @@ spark.history.fs.logDirectory       qfs:///history/spark-event/
 spark.history.fs.cleaner.maxAge     30d
 
 # Configure QFS here rather than in core-site.xml
-spark.hadoop.fs.qfs.impl            com.quantcast.qfs.hadoop.QuantcastFileSystem
+spark.hadoop.fs.qfs.impl            com.quantcast.qfs.hadoop.QuantcastFileSystem2
 spark.hadoop.fs.defaultFS           qfs://qfs-master:20000
 spark.hadoop.fs.qfs.metaServerHost  qfs-master
 spark.hadoop.fs.qfs.metaServerPort  20000