diff --git a/pyproject.toml b/pyproject.toml
index a233e4f1..90ebe16f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ dev = [
     "pyrefly == 0.39.4",
 ]
 lsp = [
-    "pygls[ws] ~= 1.3.1",
+    "pygls[ws] ~= 2.0.0",
 ]
 pretty = [
     "rich >= 12.6.0",
diff --git a/src/fixit/lsp.py b/src/fixit/lsp.py
index 00f34b7c..5ce5545f 100644
--- a/src/fixit/lsp.py
+++ b/src/fixit/lsp.py
@@ -16,13 +16,14 @@
     DidOpenTextDocumentParams,
     DocumentFormattingParams,
     Position,
+    PublishDiagnosticsParams,
     Range,
     TEXT_DOCUMENT_DID_CHANGE,
     TEXT_DOCUMENT_DID_OPEN,
     TEXT_DOCUMENT_FORMATTING,
     TextEdit,
 )
-from pygls.server import LanguageServer
+from pygls.lsp.server import LanguageServer
 from pygls.workspace.text_document import TextDocument
 
 from .__version__ import __version__
@@ -69,12 +70,12 @@ def diagnostic_generator(
         """
         LSP wrapper (provides document state from `pygls`) for `fixit_bytes`.
         """
-        path = Uri.to_fs_path(uri)
-        if not path:
+        path_uri = Uri.to_fs_path(uri)
+        if not path_uri:
             return None
-        path = Path(path)
+        path = Path(path_uri)
 
-        doc: TextDocument = self.lsp.workspace.get_document(uri)  # type: ignore[no-untyped-call]
+        doc: TextDocument = self.lsp.workspace.get_text_document(uri)  # type: ignore[no-untyped-call]
         return fixit_bytes(
             path,
             doc.source.encode(),
@@ -107,7 +108,9 @@ def _validate(self, uri: str, version: int) -> None:
                 source="fixit",
             )
             diagnostics.append(diagnostic)
-        self.lsp.publish_diagnostics(uri, diagnostics, version=version)
+        self.lsp.text_document_publish_diagnostics(
+            PublishDiagnosticsParams(uri, diagnostics, version)
+        )
 
     def validate(self, uri: str, version: int) -> None:
         """
@@ -137,7 +140,9 @@ def format(self, params: DocumentFormattingParams) -> Optional[List[TextEdit]]:
         if not formatted_content:
             return None
 
-        doc: TextDocument = self.lsp.workspace.get_document(params.text_document.uri)  # type: ignore[no-untyped-call]
+        doc: TextDocument = self.lsp.workspace.get_text_document(
+            params.text_document.uri
+        )
         entire_range = Range(
             start=Position(line=0, character=0),
             end=Position(line=len(doc.lines) - 1, character=len(doc.lines[-1])),