diff --git a/requirements.txt b/requirements.txt
index cdfb97d..4afeade 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,4 @@ numpy>=1.22.4
 argparse
 soundfile>=0.10.2
 pathlib
-collections
 tabulate>=0.9.0
diff --git a/setup.py b/setup.py
index 4dfaaf9..30655a3 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name="RTTManz",
-    version="0.2.0",
+    version="0.2.2",
     author="Yu-Sen Cheng (DTDwind)",
     description="A simple Python package for analyzing the necessary data in Speaker Diarization using oracle RTTM files and audio files.",
     keywords="analyze rttm",
@@ -16,7 +16,6 @@
         'argparse',
         'soundfile>=0.10.2',
         'pathlib',
-        'collections',
         'tabulate>=0.9.0',
     ],
     dependency_links=[],