diff --git a/.flake8rc b/.flake8rc
new file mode 100644
index 0000000..bfead2c
--- /dev/null
+++ b/.flake8rc
@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 79
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index da9c0e2..61c0c0b 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -18,20 +18,19 @@ jobs:
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         python -m pip install pytest
-        pip install -r requirements.txt
+        make install
     - name: Lint with pycodestyle and pyflakes
       run: |
-        pycodestyle .
-        pyflakes .
+        make flake
     - name: Test with pytest
       run: |
-        pytest
+        make test
diff --git a/.pycodestylerc b/.pycodestylerc
new file mode 100644
index 0000000..fa95328
--- /dev/null
+++ b/.pycodestylerc
@@ -0,0 +1,2 @@
+[pycodestyle]
+max-line-length = 79
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..bec2ed4
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,23 @@
+SHELL = /bin/bash
+PYTHON = python
+
+
+.PHONY: clean
+clean:
+	find . -path "*/__pycache__/*" -delete
+	find . -type d -empty -delete
+
+
+.PHONY: install
+install: clean
+	$(PYTHON) -m pip install -r requirements.txt
+
+
+.PHONY: flake flake8
+flake flake8:
+	pycodestyle --config .pycodestylerc .
+	pyflakes .
+
+.PHONY: test
+test:
+	$(PYTHON) -m pytest
diff --git a/NEWS.md b/NEWS.md
index 431ff49..b24d4c1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,9 @@
 # NEWS
 
+## 1.17
+
+- Migrating to pygls v1.1
+
 ## 1.16
 
 - Use version 0 for not opened files on rename
diff --git a/README.md b/README.md
index db93774..af056ef 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,8 @@ Yet another Jedi Python language server
 ## Requirements
 
 - Python >= 3.6
-- pygls >= 0.10.2,<0.11
-- Jedi >= 0.18
+- pygls >= 1.1, <1.2
+- Jedi >= 0.19
 - pyflakes ~= 2.2
 - pycodestyle ~= 2.5
 - yapf ~=0.30
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..b48f322
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+1.17
diff --git a/anakinls/__main__.py b/anakinls/__main__.py
index 90dd3e6..e1ea589 100644
--- a/anakinls/__main__.py
+++ b/anakinls/__main__.py
@@ -18,7 +18,7 @@
 import logging
 
 from .server import server
-from .version import get_version
+from .version import __version__
 
 logging.basicConfig(level=logging.INFO)
 logging.getLogger('pygls.protocol').setLevel(logging.WARN)
@@ -56,7 +56,7 @@ def main():
     args = parser.parse_args()
 
     if args.version:
-        print(inspect.cleandoc(f'''anakinls v{get_version()}
+        print(inspect.cleandoc(f'''anakinls v{__version__}
           Copyright (C) 2020 Andrii Kolomoiets
           This is free software; see the source for copying conditions.
           There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
diff --git a/anakinls/server.py b/anakinls/server.py
index 4972693..e2414ab 100644
--- a/anakinls/server.py
+++ b/anakinls/server.py
@@ -35,19 +35,12 @@
 
 from yapf.yapflib.yapf_api import FormatCode  # type: ignore
 
-from pygls.lsp.methods import (COMPLETION, TEXT_DOCUMENT_DID_CHANGE,
-                               TEXT_DOCUMENT_DID_CLOSE, TEXT_DOCUMENT_DID_OPEN,
-                               HOVER, SIGNATURE_HELP, DEFINITION,
-                               REFERENCES, WORKSPACE_DID_CHANGE_CONFIGURATION,
-                               TEXT_DOCUMENT_WILL_SAVE, TEXT_DOCUMENT_DID_SAVE,
-                               DOCUMENT_SYMBOL, CODE_ACTION, FORMATTING,
-                               RANGE_FORMATTING, RENAME, DOCUMENT_HIGHLIGHT)
-from pygls.lsp import types
+from lsprotocol import types
 from pygls.server import LanguageServer
-from pygls.protocol import LanguageServerProtocol
+from pygls.protocol import LanguageServerProtocol, lsp_method
 from pygls.uris import to_fs_path
 
-from .version import get_version  # type: ignore
+from .version import __version__  # type: ignore
 
 RE_WORD = re.compile(r'\w*')
 
@@ -76,9 +69,10 @@
 
 class AnakinLanguageServerProtocol(LanguageServerProtocol):
 
-    def bf_initialize(
+    @lsp_method(types.INITIALIZE)
+    def lsp_initialize(
             self, params: types.InitializeParams) -> types.InitializeResult:
-        result = super().bf_initialize(params)
+        result = super().lsp_initialize(params)
         global jediEnvironment
         global jediProject
         global completionFunction
@@ -129,15 +123,14 @@ def get_attr(o, *attrs):
         else:
             hoverFunction = _docstring
 
-        # pygls does not currently support serverInfo of LSP v3.15
-        result.server_info = types.ServerInfo(
-            name='anakinls',
-            version=get_version(),
-        )
         return result
 
 
-server = LanguageServer(protocol_cls=AnakinLanguageServerProtocol)
+server = LanguageServer(
+    name='anakinls',
+    version=__version__,
+    protocol_cls=AnakinLanguageServerProtocol
+)
 
 scripts: Dict[str, Script] = {}
 pycodestyleOptions: Dict[str, Any] = {}
@@ -172,7 +165,7 @@ def get_attr(o, *attrs):
 def get_script(ls: LanguageServer, uri: str, update: bool = False) -> Script:
     result = None if update else scripts.get(uri)
     if not result:
-        document = ls.workspace.get_document(uri)
+        document = ls.workspace.get_text_document(uri)
         result = Script(
             code=document.source,
             path=document.path,
@@ -395,13 +388,13 @@ def _validate(ls: LanguageServer, uri: str, script: Script = None):
     ls.publish_diagnostics(uri, result)
 
 
-@server.feature(TEXT_DOCUMENT_DID_OPEN)
+@server.feature(types.TEXT_DOCUMENT_DID_OPEN)
 def did_open(ls: LanguageServer, params: types.DidOpenTextDocumentParams):
     if config['diagnostic_on_open']:
         _validate(ls, params.text_document.uri)
 
 
-@server.feature(TEXT_DOCUMENT_DID_CLOSE)
+@server.feature(types.TEXT_DOCUMENT_DID_CLOSE)
 def did_close(ls: LanguageServer, params: types.DidCloseTextDocumentParams):
     try:
         del scripts[params.text_document.uri]
@@ -409,7 +402,7 @@ def did_close(ls: LanguageServer, params: types.DidCloseTextDocumentParams):
         pass
 
 
-@server.feature(TEXT_DOCUMENT_DID_CHANGE)
+@server.feature(types.TEXT_DOCUMENT_DID_CHANGE)
 def did_change(ls: LanguageServer, params: types.DidChangeTextDocumentParams):
     script = get_script(ls, params.text_document.uri, True)
     if config['diagnostic_on_change']:
@@ -497,7 +490,10 @@ def _completions_snippets(completions: List[Completion],
             ))
 
 
-@server.feature(COMPLETION, types.CompletionOptions(trigger_characters=['.']))
+@server.feature(
+    types.TEXT_DOCUMENT_COMPLETION,
+    types.CompletionOptions(trigger_characters=['.']),
+)
 def completions(ls: LanguageServer, params: types.CompletionParams):
     global completionFunction
     script = get_script(ls, params.text_document.uri)
@@ -543,7 +539,7 @@ def _docstring_markdown(name: Name) -> str:
     return f'```\n{doc}\n```'
 
 
-@server.feature(HOVER)
+@server.feature(types.TEXT_DOCUMENT_HOVER)
 def hover(ls: LanguageServer,
           params: types.TextDocumentPositionParams) -> Optional[types.Hover]:
     global hoverFunction
@@ -560,8 +556,10 @@ def hover(ls: LanguageServer,
     return None
 
 
-@server.feature(SIGNATURE_HELP,
-                types.SignatureHelpOptions(trigger_characters=['(', ',']))
+@server.feature(
+    types.TEXT_DOCUMENT_SIGNATURE_HELP,
+    types.SignatureHelpOptions(trigger_characters=['(', ','])
+)
 def signature_help(
         ls: LanguageServer,
         params: types.TextDocumentPositionParams
@@ -614,7 +612,7 @@ def _get_locations(defs: List[Name]) -> List[types.Location]:
     ]
 
 
-@server.feature(DEFINITION)
+@server.feature(types.TEXT_DOCUMENT_DEFINITION)
 def definition(
         ls: LanguageServer,
         params: types.TextDocumentPositionParams) -> List[types.Location]:
@@ -623,7 +621,7 @@ def definition(
     return _get_locations(defs)
 
 
-@server.feature(REFERENCES)
+@server.feature(types.TEXT_DOCUMENT_REFERENCES)
 def references(ls: LanguageServer,
                params: types.ReferenceParams) -> List[types.Location]:
     script = get_script(ls, params.text_document.uri)
@@ -632,7 +630,7 @@ def references(ls: LanguageServer,
     return _get_locations(refs)
 
 
-@server.feature(WORKSPACE_DID_CHANGE_CONFIGURATION)
+@server.feature(types.WORKSPACE_DID_CHANGE_CONFIGURATION)
 def did_change_configuration(ls: LanguageServer,
                              settings: types.DidChangeConfigurationParams):
     if not settings.settings or 'anakinls' not in settings.settings:
@@ -673,13 +671,14 @@ def did_change_configuration(ls: LanguageServer,
             _validate(ls, uri)
 
 
-@server.feature(TEXT_DOCUMENT_WILL_SAVE)
+@server.feature(types.TEXT_DOCUMENT_WILL_SAVE)
 def will_save(ls: LanguageServer, params: types.WillSaveTextDocumentParams):
     pass
 
 
-@server.feature(TEXT_DOCUMENT_DID_SAVE,
-                types.TextDocumentSaveRegistrationOptions(include_text=False))
+@server.feature(
+    types.TEXT_DOCUMENT_DID_SAVE, types.SaveOptions(include_text=False)
+)
 def did_save(ls: LanguageServer, params: types.DidSaveTextDocumentParams):
     if config['diagnostic_on_save']:
         _validate(ls, params.text_document.uri)
@@ -765,7 +764,7 @@ def _symbols():
     return list(_symbols())
 
 
-@server.feature(DOCUMENT_SYMBOL)
+@server.feature(types.TEXT_DOCUMENT_DOCUMENT_SYMBOL)
 def document_symbol(
         ls: LanguageServer, params: types.DocumentSymbolParams
 ) -> Union[List[types.DocumentSymbol], List[types.SymbolInformation], None]:
@@ -837,14 +836,14 @@ def _get_document_changes(
             result.append(types.TextDocumentEdit(
                 text_document=types.VersionedTextDocumentIdentifier(
                     uri=uri,
-                    version=ls.workspace.get_document(uri).version or 0
+                    version=ls.workspace.get_text_document(uri).version or 0
                 ),
                 edits=text_edits
             ))
     return result
 
 
-@server.feature(CODE_ACTION, types.CodeActionOptions(
+@server.feature(types.TEXT_DOCUMENT_CODE_ACTION, types.CodeActionOptions(
     code_action_kinds=[
         types.CodeActionKind.RefactorInline,
         types.CodeActionKind.RefactorExtract]))
@@ -881,21 +880,21 @@ def _formatting(
     return _get_text_edits(diff)
 
 
-@server.feature(FORMATTING)
+@server.feature(types.TEXT_DOCUMENT_FORMATTING)
 def formatting(
         ls: LanguageServer, params: types.DocumentFormattingParams
 ) -> Optional[List[types.TextEdit]]:
     return _formatting(ls, params.text_document.uri)
 
 
-@server.feature(RANGE_FORMATTING)
+@server.feature(types.TEXT_DOCUMENT_RANGE_FORMATTING)
 def range_formatting(
         ls: LanguageServer, params: types.DocumentRangeFormattingParams
 ) -> Optional[List[types.TextEdit]]:
     return _formatting(ls, params.text_document.uri, params.range)
 
 
-@server.feature(RENAME)
+@server.feature(types.TEXT_DOCUMENT_RENAME)
 def rename(ls: LanguageServer,
            params: types.RenameParams) -> Optional[types.WorkspaceEdit]:
     script = get_script(ls, params.text_document.uri)
@@ -911,7 +910,7 @@ def rename(ls: LanguageServer,
     return None
 
 
-@server.feature(DOCUMENT_HIGHLIGHT)
+@server.feature(types.TEXT_DOCUMENT_DOCUMENT_HIGHLIGHT)
 def highlight(
         ls: LanguageServer, params: types.TextDocumentPositionParams
 ) -> Optional[List[types.DocumentHighlight]]:
diff --git a/anakinls/version.py b/anakinls/version.py
index 1c815eb..bf63db1 100644
--- a/anakinls/version.py
+++ b/anakinls/version.py
@@ -13,10 +13,10 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-import pkg_resources
+from pathlib import Path
 
 
-def get_version() -> str:
-    "Return the version of anakinls."
-    r = pkg_resources.require('anakin-language-server')
-    return r[0].version
+__all__ = ['__version__']
+
+
+__version__ = (Path(__file__).parents[1] / 'VERSION').read_text().strip()
diff --git a/requirements.txt b/requirements.txt
index f828819..74ebdc5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
-jedi>=0.18.0
-pygls>=0.10.2,<0.11
+jedi>=0.19.0
+pygls>=1.1,<1.2
 pyflakes~=2.2
 pycodestyle~=2.5
 yapf~=0.30
diff --git a/setup.py b/setup.py
index f8bf78c..be53be4 100644
--- a/setup.py
+++ b/setup.py
@@ -1,24 +1,23 @@
+from pathlib import Path
 from setuptools import setup  # type: ignore
 
-
-with open('README.md', 'r') as f:
-    long_description = f.read()
+from anakinls import version
 
 
 setup(
     name='anakin-language-server',
-    version='1.16',
+    version=version.__version__,
     author='Andrii Kolomoiets',
     author_email='andreyk.mad@gmail.com',
     description='Yet another Jedi Python language server',
-    long_description=long_description,
+    long_description=Path('README.md').read_text(),
     long_description_content_type='text/markdown',
     url='https://github.com/muffinmad/anakin-language-server',
     packages=['anakinls'],
     python_requires='>=3.6',
     install_requires=[
-        'jedi>=0.18.0',
-        'pygls>=0.10.2,<0.11',
+        'jedi>=0.19.0',
+        'pygls>=1.1,<1.2',
         'pyflakes~=2.2',
         'pycodestyle~=2.5',
         'yapf~=0.30'
diff --git a/tests/test_server.py b/tests/test_server.py
index 98526ef..f2bdc7e 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -17,7 +17,7 @@
 
 from anakinls import server as aserver
 
-from pygls.lsp import types
+from lsprotocol import types
 from pygls.workspace import Document, Workspace
 
 
@@ -41,7 +41,7 @@ def foo(a, *, b, c=None):
 
 foo'''
     doc = Document(uri, content)
-    server.workspace.get_document = Mock(return_value=doc)
+    server.workspace.get_text_document = Mock(return_value=doc)
     aserver.completionFunction = aserver._completions_snippets
     completion = aserver.completions(
         server,
@@ -73,7 +73,7 @@ def foo(a, *, b, c=None):
 
 foo'''
     doc = Document(uri, content)
-    server.workspace.get_document = Mock(return_value=doc)
+    server.workspace.get_text_document = Mock(return_value=doc)
     aserver.hoverFunction = aserver._docstring
     h = aserver.hover(server, types.TextDocumentPositionParams(
         text_document=types.TextDocumentIdentifier(uri=uri),
@@ -123,9 +123,9 @@ def test_diff_to_edits():
 '''
     edits = aserver._get_text_edits(diff)
     assert len(edits) == 4
-    assert str(edits[0].range) == 'start=0:0 end=0:0'
-    assert str(edits[1].range) == 'start=10:0 end=15:0'
+    assert str(edits[0].range) == '0:0-0:0'
+    assert str(edits[1].range) == '10:0-15:0'
     assert edits[1].new_text == ''
-    assert str(edits[2].range) == 'start=16:0 end=17:0'
+    assert str(edits[2].range) == '16:0-17:0'
     assert edits[2].new_text == 'check this document. On\n'
-    assert str(edits[3].range) == 'start=24:0 end=24:0'
+    assert str(edits[3].range) == '24:0-24:0'