diff --git a/MANIFEST.in b/MANIFEST.in
index f104e0c..4f9f11c 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,6 +2,5 @@ include MANIFEST.in
 include setup.py
 include README.md
 include LICENSE
-include requirements.txt
 
 include assets/*.png
diff --git a/flowlauncher/FlowLauncher.py b/flowlauncher/FlowLauncher.py
index 4891f92..53312e5 100644
--- a/flowlauncher/FlowLauncher.py
+++ b/flowlauncher/FlowLauncher.py
@@ -3,8 +3,7 @@
 
 import inspect
 import sys
-
-import demjson
+from json import loads, dumps
 
 
 class FlowLauncher:
@@ -17,8 +16,11 @@ def __init__(self):
         # defalut jsonrpc
         self.rpc_request = {'method': 'query', 'parameters': ['']}
         self.debugMessage = ""
-        if len(sys.argv) > 1:  # from input to get jsonrpc
-            self.rpc_request = demjson.decode(sys.argv[1])
+        
+        if len(sys.argv) > 1:
+            
+            # Gets JSON-RPC from Flow Launcher process.
+            self.rpc_request = loads(sys.argv[1])
 
         # proxy is not working now
         # self.proxy = self.rpc_request.get("proxy", {})
@@ -31,7 +33,7 @@ def __init__(self):
         results = request_method(*request_parameters)
 
         if request_method_name in ("query", "context_menu"):
-            print(demjson.encode({
+            print(dumps({
                 "result": results,
                 "debugMessage": self.debugMessage
             }))
diff --git a/flowlauncher/FlowLauncherAPI.py b/flowlauncher/FlowLauncherAPI.py
index 030bcbe..526b52d 100644
--- a/flowlauncher/FlowLauncherAPI.py
+++ b/flowlauncher/FlowLauncherAPI.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 
-import demjson
-
+from json import dumps
 
 class FlowLauncherAPI:
 
@@ -10,7 +9,7 @@ def change_query(cls, query, requery: bool = False):
         """
         change flow launcher query
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.ChangeQuery",
             "parameters": [query, requery]}))
 
@@ -19,7 +18,7 @@ def shell_run(cls, cmd):
         """
         run shell commands
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.ShellRun",
             "parameters": [cmd]}))
 
@@ -28,7 +27,7 @@ def close_app(cls):
         """
         close flow launcher
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.CloseApp",
             "parameters": []}))
 
@@ -37,7 +36,7 @@ def hide_app(cls):
         """
         hide flow launcher
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.HideApp",
             "parameters": []}))
 
@@ -46,7 +45,7 @@ def show_app(cls):
         """
         show flow launcher
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.ShowApp",
             "parameters": []}))
 
@@ -55,7 +54,7 @@ def show_msg(cls, title: str, sub_title: str, ico_path: str = ""):
         """
         show messagebox
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.ShowMsg",
             "parameters": [title, sub_title, ico_path]}))
 
@@ -64,7 +63,7 @@ def open_setting_dialog(cls):
         """
         open setting dialog
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.OpenSettingDialog",
             "parameters": []}))
 
@@ -73,7 +72,7 @@ def start_loadingbar(cls):
         """
         start loading animation in flow launcher
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.StartLoadingBar",
             "parameters": []}))
 
@@ -82,7 +81,7 @@ def stop_loadingbar(cls):
         """
         stop loading animation in flow launcher
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.StopLoadingBar",
             "parameters": []}))
 
@@ -91,6 +90,6 @@ def reload_plugins(cls):
         """
         reload all flow launcher plugins
         """
-        print(demjson.encode({
+        print(dumps({
             "method": "Flow.Launcher.ReloadPlugins",
             "parameters": []}))
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 2b2afd6..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-demjson
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 6b621fe..8f6ee22 100644
--- a/setup.py
+++ b/setup.py
@@ -45,9 +45,6 @@
     "Topic :: Software Development :: Libraries :: Application Frameworks",
 ]
 
-with open("requirements.txt", "r") as f:
-    REQUIRES = [package.strip() for package in f.readlines()]
-
 
 setup(
     name=NAME,
@@ -65,7 +62,5 @@
     packages=find_packages(),
     include_package_data=True,
     download_url=DOWNLOAD_URL,
-    install_requires=REQUIRES,
-    requires=REQUIRES,
     classifiers=CLASSIFIERS
 )