diff --git a/pyls/hookspecs.py b/pyls/hookspecs.py
index d094dcb5..44e4ee15 100644
--- a/pyls/hookspecs.py
+++ b/pyls/hookspecs.py
@@ -88,7 +88,7 @@ def pyls_initialize(config, workspace):
 
 
 @hookspec
-def pyls_lint(config, workspace, document):
+def pyls_lint(config, workspace, document, trigger):
     pass
 
 
diff --git a/pyls/python_ls.py b/pyls/python_ls.py
index eda0e02f..80b1853e 100644
--- a/pyls/python_ls.py
+++ b/pyls/python_ls.py
@@ -194,10 +194,10 @@ def hover(self, doc_uri, position):
         return self._hook('pyls_hover', doc_uri, position=position) or {'contents': ''}
 
     @_utils.debounce(LINT_DEBOUNCE_S, keyed_by='doc_uri')
-    def lint(self, doc_uri):
+    def lint(self, doc_uri, trigger):
         # Since we're debounced, the document may no longer be open
         if doc_uri in self.workspace.documents:
-            self.workspace.publish_diagnostics(doc_uri, flatten(self._hook('pyls_lint', doc_uri)))
+            self.workspace.publish_diagnostics(doc_uri, flatten(self._hook('pyls_lint', doc_uri, trigger=trigger)))
 
     def references(self, doc_uri, position, exclude_declaration):
         return flatten(self._hook(
@@ -217,7 +217,7 @@ def m_text_document__did_close(self, textDocument=None, **_kwargs):
     def m_text_document__did_open(self, textDocument=None, **_kwargs):
         self.workspace.put_document(textDocument['uri'], textDocument['text'], version=textDocument.get('version'))
         self._hook('pyls_document_did_open', textDocument['uri'])
-        self.lint(textDocument['uri'])
+        self.lint(textDocument['uri'], trigger='open')
 
     def m_text_document__did_change(self, contentChanges=None, textDocument=None, **_kwargs):
         for change in contentChanges:
@@ -226,10 +226,10 @@ def m_text_document__did_change(self, contentChanges=None, textDocument=None, **
                 change,
                 version=textDocument.get('version')
             )
-        self.lint(textDocument['uri'])
+        self.lint(textDocument['uri'], trigger='change')
 
     def m_text_document__did_save(self, textDocument=None, **_kwargs):
-        self.lint(textDocument['uri'])
+        self.lint(textDocument['uri'], trigger='save')
 
     def m_text_document__code_action(self, textDocument=None, range=None, context=None, **_kwargs):
         return self.code_actions(textDocument['uri'], range, context)
@@ -273,12 +273,12 @@ def m_text_document__signature_help(self, textDocument=None, position=None, **_k
     def m_workspace__did_change_configuration(self, settings=None):
         self.config.update((settings or {}).get('pyls', {}))
         for doc_uri in self.workspace.documents:
-            self.lint(doc_uri)
+            self.lint(doc_uri, trigger='change-configuration')
 
     def m_workspace__did_change_watched_files(self, **_kwargs):
         # Externally changed files may result in changed diagnostics
         for doc_uri in self.workspace.documents:
-            self.lint(doc_uri)
+            self.lint(doc_uri, trigger='change-watched-files')
 
     def m_workspace__execute_command(self, command=None, arguments=None):
         return self.execute_command(command, arguments)