diff --git a/README.rst b/README.rst
index 1c05f7e..131053a 100644
--- a/README.rst
+++ b/README.rst
@@ -61,6 +61,10 @@ Usage
                         Set the reporter name
   --slack_timeout=SLACK_TIMEOUT [DEFAULT = 10s ]
                         Set the timeout for sending results in seconds
+  --slack_success_icon=SLACK_SUCCESS_ICON [default = :thumbsup:]
+                        Set icon for a successful run
+  --slack_failed_icon=SLACK_FAILED_ICON [default = :thumbsdown:]
+                        Set icon for a failed run
 
 
 Example
diff --git a/pytest_slack/plugin.py b/pytest_slack/plugin.py
index 1f13fce..f69f0bd 100644
--- a/pytest_slack/plugin.py
+++ b/pytest_slack/plugin.py
@@ -45,6 +45,22 @@ def pytest_addoption(parser):
         help='Set the report send timeout'
     )
 
+    group.addoption(
+        '--slack_success_icon',
+        action='store',
+        dest='slack_success_icon',
+        default=':thumbsup:',
+        help='Set icon for a successful run'
+    )
+
+    group.addoption(
+        '--slack_failed_icon',
+        action='store',
+        dest='slack_failed_icon',
+        default=':thumbsdown:',
+        help='Set icon for a failed run'
+    )
+
 
 @pytest.hookimpl(hookwrapper=True)
 def pytest_terminal_summary(terminalreporter, exitstatus, config):
@@ -66,10 +82,10 @@ def pytest_terminal_summary(terminalreporter, exitstatus, config):
 
     if int(exitstatus) == 0:
         color = "#56a64f"
-        emoji = ':thumbsup:'
+        emoji = config.option.slack_success_icon
     else:
         color = '#ff0000'
-        emoji = ':thumbsdown:'
+        emoji = config.option.slack_failed_icon
 
     final_results = 'Passed=%s Failed=%s Skipped=%s Error=%s' % (passed, failed, skipped, error)
     if report_link:
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 6d956cc..379bcbf 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,6 +7,6 @@ tox==3.9.0
 coverage==4.5.3
 Sphinx==2.0.1
 twine==1.13.0
-mock=2.0.0
+mock==2.0.0
 pytest==4.4.1
 pytest-runner==4.4
diff --git a/tests/test_plugin.py b/tests/test_plugin.py
index 625ac17..068b501 100644
--- a/tests/test_plugin.py
+++ b/tests/test_plugin.py
@@ -1,6 +1,8 @@
 import json
 import mock
 
+import pytest
+
 
 def test_pytest_slack_failed(testdir):
     """Make sure that our pytest-slack works."""
@@ -30,12 +32,14 @@ def test_error(test):
     slack_hook_username = 'regression Testing'
     slack_hook_report_host = 'http://report_link.com'
     slack_hook_channel = 'test'
+    slack_hook_icon_emoji = ':thumbsdown:'
     expected_text = '<http://report_link.com|Passed=1 Failed=1 Skipped=1 Error=1>'
     with mock.patch('requests.post') as mock_post:
         testdir.runpytest('--slack_channel', slack_hook_channel,
                           '--slack_hook', slack_hook_host,
                           '--slack_report_link', slack_hook_report_host,
-                          '--slack_username', slack_hook_username)
+                          '--slack_username', slack_hook_username,
+                          '--slack_failed_icon', slack_hook_icon_emoji)
 
         called_data = json.loads(mock_post.call_args[1]['data'])
         called_host = mock_post.call_args[0][0]
@@ -50,7 +54,7 @@ def test_error(test):
         assert called_channel == slack_hook_channel
         assert called_username == slack_hook_username
         assert color == '#ff0000'
-        assert emoji == ':thumbsdown:'
+        assert emoji == slack_hook_icon_emoji
 
 
 def test_pytest_slack_passed(testdir):
@@ -69,12 +73,14 @@ def test_pass():
     slack_hook_username = 'regression Testing'
     slack_hook_report_host = 'http://report_link.com'
     slack_hook_channel = 'test'
+    slack_hook_icon_emoji = ':thumbsup:'
     expected_text = '<http://report_link.com|Passed=1 Failed=0 Skipped=0 Error=0>'
     with mock.patch('requests.post') as mock_post:
         testdir.runpytest('--slack_channel', slack_hook_channel,
                           '--slack_hook', slack_hook_host,
                           '--slack_report_link', slack_hook_report_host,
-                          '--slack_username', slack_hook_username)
+                          '--slack_username', slack_hook_username,
+                          '--slack_success_icon', slack_hook_icon_emoji)
 
         called_data = json.loads(mock_post.call_args[1]['data'])
         called_host = mock_post.call_args[0][0]
@@ -89,4 +95,32 @@ def test_pass():
         assert called_channel == slack_hook_channel
         assert called_username == slack_hook_username
         assert color == '#56a64f'
-        assert emoji == ':thumbsup:'
+        assert emoji == slack_hook_icon_emoji
+
+
+@pytest.mark.parametrize('test_input,expected_emoji', [
+    ('1 == 1', ':sunny:'),
+    ('2 == 1', ':rain_cloud:'),
+])
+def test_pytest_slack_custom_icons(testdir, test_input, expected_emoji):
+    testdir.makepyfile(
+        """
+        def test_icon_emoji():
+            assert %s
+        """ % test_input
+    )
+
+    slack_hook_host = 'http://test.com/any_hash'
+    slack_hook_channel = 'test'
+    slack_hook_icon_emoji_success = ':sunny:'
+    slack_hook_icon_emoji_failed = ':rain_cloud:'
+    with mock.patch('requests.post') as mock_post:
+        testdir.runpytest('--slack_channel', slack_hook_channel,
+                          '--slack_hook', slack_hook_host,
+                          '--slack_success_icon', slack_hook_icon_emoji_success,
+                          '--slack_failed_icon', slack_hook_icon_emoji_failed)
+
+        called_data = json.loads(mock_post.call_args[1]['data'])
+        emoji = called_data['icon_emoji']
+
+        assert emoji == expected_emoji