diff --git a/Makefile b/Makefile
index b941ad1..c833f9f 100644
--- a/Makefile
+++ b/Makefile
@@ -9,22 +9,13 @@ UID := $(shell id -u)
 mobileinsight.sif: mobileinsight.def
 	"$(APPTAINER)" build --build-arg="NUM_THREADS=$(NUM_THREADS)" "$@" "$<"
 
-mobileinsight-spark.sif: with-spark.def mobileinsight.sif
-	"$(APPTAINER)" build "$@" "$<"
-
-prepare:
+run: mobileinsight.sif
 	@mkdir -p "$(OVERLAY_DIR)"
 	@lsmod | grep overlay > /dev/null || sudo modprobe overlay
-
-run: mobileinsight.sif prepare
 	@$(APPTAINER) run --overlay "$(OVERLAY_DIR)" \
 		-B "/run/user/$(UID)" mobileinsight.sif
 
-run-spark: mobileinsight-spark.sif prepare
-	@$(APPTAINER) run --overlay "$(OVERLAY_DIR)" \
-		-B "/run/user/$(UID)" mobileinsight-spark.sif
-
 clean:
-	rm -rf *.sif $(OVERLAY_DIR)
+	rm -f mobileinsight.sif $(OVERLAY_DIR)
 
-.PHONY: prepare run run-spark clean
+.PHONY: run clean
diff --git a/README.md b/README.md
index a444d97..992b247 100644
--- a/README.md
+++ b/README.md
@@ -29,11 +29,6 @@ $ ./mobileinsight.sif python3 "$PYTHON_ARGS"
 
 # Start a bash shell inside the container
 $ ./mobileinsight.sif bash
-
-# Only available in spark version
-#
-# Start a pyspark interpreter
-$ ./mobileinsight-spark.sif pyspark
 ```
 
 Examples are stored in /opt/mobileinsight-examples.
@@ -41,6 +36,4 @@ Examples are stored in /opt/mobileinsight-examples.
 Build
 -----
 
-Run `make mobileinsight.sif` or `make mobileinsight-spark.sif` to build the
-corresponding apptainer image. The spark version includes both `mobileinsight`
-along with `pyspark` for distributed log processing.
+Run `make mobileinsight.sif` to build the apptainer image.
diff --git a/mobileinsight.def b/mobileinsight.def
index 84b3263..4b0d801 100644
--- a/mobileinsight.def
+++ b/mobileinsight.def
@@ -19,7 +19,6 @@ From: ubuntu:22.04
             git \
             python3 \
             python3-pip \
-            python3-venv \
             python3-wxgtk4.0 \
             python3-matplotlib \
             cmake \
diff --git a/with-spark.def b/with-spark.def
deleted file mode 100644
index 101bed4..0000000
--- a/with-spark.def
+++ /dev/null
@@ -1,32 +0,0 @@
-Bootstrap: localimage
-From: mobileinsight.sif
-
-%arguments
-    SPARK_URL="https://dlcdn.apache.org/spark/spark-3.5.1/spark-3.5.1-bin-hadoop3.tgz"
-
-%environment
-    export SPARK_HOME="/opt/spark"
-    export PATH="/opt/spark/sbin:/opt/spark/bin:$PATH"
-    export PYSPARK_PYTHON="/usr/bin/python3"
-    export SPARK_LOCAL_IP="127.0.0.1"
-
-%post
-    # Update and install dependencies
-    mkdir -p /build
-    export DEBIAN_FRONTEND=noninteractive
-    apt-get update
-    apt-get upgrade -y
-    apt-get install -y \
-        openjdk-8-jre-headless \
-        scala
-
-    # Download Spark
-    SPARK_TGZ="/build/$(basename "{{ SPARK_URL }}")"
-    cd /build
-    wget "{{ SPARK_URL }}" -nv -O "$SPARK_TGZ"
-    tar -xf "$SPARK_TGZ"
-    mv "$(echo $SPARK_TGZ | sed 's/\.tgz$//')" /opt/spark
-
-    # Cleanup
-    apt-get autoclean -y
-    rm -rf /build