prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  arrow dep missing
  Fresh install of ubuntu 16.04
  
  ```
  $ sudo apt update && sudo apt install python3-pip
  ...
  $ pip3 install opsdroid
  ...
  $ opsdroid
  Traceback (most recent call last):
    File "/home/ubuntu/.local/bin/opsdroid", line 7, in <module>
      from opsdroid.__main__ import main
    File "/home/ubuntu/.local/lib/python3.5/site-packages/opsdroid/__main__.py", line 8, in <module>
      from opsdroid.core import OpsDroid
    File "/home/ubuntu/.local/lib/python3.5/site-packages/opsdroid/core.py", line 15, in <module>
      from opsdroid.parsers.crontab import parse_crontab
    File "/home/ubuntu/.local/lib/python3.5/site-packages/opsdroid/parsers/crontab.py", line 6, in <module>
      import arrow
  ImportError: No module named 'arrow'
  ```
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `setup.py`
  Content:
  ```
  1 #!/usr/bin/env python3
  2 import os
  3 from setuptools import setup, find_packages
  4 from opsdroid.const import __version__
  5 
  6 PACKAGE_NAME = 'opsdroid'
  7 HERE = os.path.abspath(os.path.dirname(__file__))
  8 
  9 PACKAGES = find_packages(exclude=['tests', 'tests.*', 'modules',
  10                                   'modules.*', 'docs', 'docs.*'])
  11 
  12 REQUIRES = [
  13     'pyyaml>=3.11,<4',
  14     'aiohttp>=1.2.0,<2',
  15     'pycron>=0.40',
  16 ]
  17 
  18 setup(
  19     name=PACKAGE_NAME,
  20     version=__version__,
  21     license='GNU GENERAL PUBLIC LICENSE V3',
  22     url='',
  23     download_url='',
  24     author='Jacob Tomlinson',
  25     author_email='jacob@tom.linson.uk',
  26     description='An open source chat-ops bot.',
  27     packages=PACKAGES,
  28     include_package_data=True,
  29     zip_safe=False,
  30     platforms='any',
  31     install_requires=REQUIRES,
  32     test_suite='tests',
  33     keywords=['bot', 'chatops'],
  34     entry_points={
  35         'console_scripts': [
  36             'opsdroid = opsdroid.__main__:main'
  37         ]
  38     },
  39 )
  40
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -10,9 +10,10 @@
                                     'modules.*', 'docs', 'docs.*'])
   
   REQUIRES = [
  -    'pyyaml>=3.11,<4',
  -    'aiohttp>=1.2.0,<2',
  -    'pycron>=0.40',
  +    'arrow==0.10.0',
  +    'aiohttp==2.1.0',
  +    'pycron==0.40',
  +    'pyyaml==3.12'
   ]
   
   setup(
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -10,9 +10,10 @@\n                                   'modules.*', 'docs', 'docs.*'])\n \n REQUIRES = [\n-    'pyyaml>=3.11,<4',\n-    'aiohttp>=1.2.0,<2',\n-    'pycron>=0.40',\n+    'arrow==0.10.0',\n+    'aiohttp==2.1.0',\n+    'pycron==0.40',\n+    'pyyaml==3.12'\n ]\n \n setup(\n", "issue": "arrow dep missing\nFresh install of ubuntu 16.04\r\n\r\n```\r\n$ sudo apt update && sudo apt install python3-pip\r\n...\r\n$ pip3 install opsdroid\r\n...\r\n$ opsdroid\r\nTraceback (most recent call last):\r\n  File \"/home/ubuntu/.local/bin/opsdroid\", line 7, in <module>\r\n    from opsdroid.__main__ import main\r\n  File \"/home/ubuntu/.local/lib/python3.5/site-packages/opsdroid/__main__.py\", line 8, in <module>\r\n    from opsdroid.core import OpsDroid\r\n  File \"/home/ubuntu/.local/lib/python3.5/site-packages/opsdroid/core.py\", line 15, in <module>\r\n    from opsdroid.parsers.crontab import parse_crontab\r\n  File \"/home/ubuntu/.local/lib/python3.5/site-packages/opsdroid/parsers/crontab.py\", line 6, in <module>\r\n    import arrow\r\nImportError: No module named 'arrow'\r\n```\n", "before_files": [{"content": "#!/usr/bin/env python3\nimport os\nfrom setuptools import setup, find_packages\nfrom opsdroid.const import __version__\n\nPACKAGE_NAME = 'opsdroid'\nHERE = os.path.abspath(os.path.dirname(__file__))\n\nPACKAGES = find_packages(exclude=['tests', 'tests.*', 'modules',\n                                  'modules.*', 'docs', 'docs.*'])\n\nREQUIRES = [\n    'pyyaml>=3.11,<4',\n    'aiohttp>=1.2.0,<2',\n    'pycron>=0.40',\n]\n\nsetup(\n    name=PACKAGE_NAME,\n    version=__version__,\n    license='GNU GENERAL PUBLIC LICENSE V3',\n    url='',\n    download_url='',\n    author='Jacob Tomlinson',\n    author_email='jacob@tom.linson.uk',\n    description='An open source chat-ops bot.',\n    packages=PACKAGES,\n    include_package_data=True,\n    zip_safe=False,\n    platforms='any',\n    install_requires=REQUIRES,\n    test_suite='tests',\n    keywords=['bot', 'chatops'],\n    entry_points={\n        'console_scripts': [\n            'opsdroid = opsdroid.__main__:main'\n        ]\n    },\n)\n", "path": "setup.py"}], "after_files": [{"content": "#!/usr/bin/env python3\nimport os\nfrom setuptools import setup, find_packages\nfrom opsdroid.const import __version__\n\nPACKAGE_NAME = 'opsdroid'\nHERE = os.path.abspath(os.path.dirname(__file__))\n\nPACKAGES = find_packages(exclude=['tests', 'tests.*', 'modules',\n                                  'modules.*', 'docs', 'docs.*'])\n\nREQUIRES = [\n    'arrow==0.10.0',\n    'aiohttp==2.1.0',\n    'pycron==0.40',\n    'pyyaml==3.12'\n]\n\nsetup(\n    name=PACKAGE_NAME,\n    version=__version__,\n    license='GNU GENERAL PUBLIC LICENSE V3',\n    url='',\n    download_url='',\n    author='Jacob Tomlinson',\n    author_email='jacob@tom.linson.uk',\n    description='An open source chat-ops bot.',\n    packages=PACKAGES,\n    include_package_data=True,\n    zip_safe=False,\n    platforms='any',\n    install_requires=REQUIRES,\n    test_suite='tests',\n    keywords=['bot', 'chatops'],\n    entry_points={\n        'console_scripts': [\n            'opsdroid = opsdroid.__main__:main'\n        ]\n    },\n)\n", "path": "setup.py"}]}