diff --git a/fact_extractor/install/unpacker.py b/fact_extractor/install/unpacker.py
index 4720411f..b4d91cff 100644
--- a/fact_extractor/install/unpacker.py
+++ b/fact_extractor/install/unpacker.py
@@ -70,7 +70,7 @@
             'openjdk-14-jdk'
         ]
     },
-    # Packages common to all plateforms
+    # Packages common to all platforms
     'common': {
         'apt': [
             'libjpeg-dev',
@@ -145,19 +145,20 @@
             'git+https://github.com/fkie-cad/fact_helper_file.git',
             'patool',
             'archmage',
+            # jefferson + deps
+            'git+https://github.com/sviehb/jefferson.git',
+            'cstruct==2.1',
+            'python-lzo',
             # binwalk
             'git+https://github.com/ReFirmLabs/binwalk@v2.3.2',
             'pyqtgraph',
             'capstone',
-            'cstruct==1.8',
-            'python-lzo',
             'numpy',
             'scipy',
             'git+https://github.com/jrspruitt/ubi_reader@v0.6.3-master'  # pinned as broken currently
         ],
         'github': [
             ('kartone/sasquatch', ['./build.sh']),
-            ('svidovich/jefferson-3', ['sudo python3 setup.py install']),
             ('rampageX/firmware-mod-kit', ['(cd src && make)', 'cp src/yaffs2utils/unyaffs2 src/untrx src/tpl-tool/src/tpl-tool ../../bin/'])
         ]
     }
@@ -175,7 +176,7 @@ def install_dependencies(dependencies):
 
 
 def main(distribution):
-    # removes due to compatibilty reasons
+    # removes due to compatibility reasons
     try:
         apt_remove_packages('python-lzma')
         pip2_remove_packages('pyliblzma')
diff --git a/fact_extractor/plugins/unpacking/jffs2/test/test_plugin_jffs2.py b/fact_extractor/plugins/unpacking/jffs2/test/test_plugin_jffs2.py
index 6ac3939c..cb8c7985 100644
--- a/fact_extractor/plugins/unpacking/jffs2/test/test_plugin_jffs2.py
+++ b/fact_extractor/plugins/unpacking/jffs2/test/test_plugin_jffs2.py
@@ -12,7 +12,7 @@ def test_unpacker_selection_generic(self):
         self.check_unpacker_selection('filesystem/jffs2-big', 'JFFS2')
 
     def test_extraction_little(self):
-        self.check_unpacking_of_standard_unpack_set(TEST_DATA_DIR / 'jffs2_be.img', additional_prefix_folder='jffs-root/fs_1')
+        self.check_unpacking_of_standard_unpack_set(TEST_DATA_DIR / 'jffs2_be.img', additional_prefix_folder='jffs-root')
 
     def test_extraction_big(self):
-        self.check_unpacking_of_standard_unpack_set(TEST_DATA_DIR / 'jffs2_le.img', additional_prefix_folder='jffs-root/fs_1')
+        self.check_unpacking_of_standard_unpack_set(TEST_DATA_DIR / 'jffs2_le.img', additional_prefix_folder='jffs-root')