diff --git a/plugin/session_buffer.py b/plugin/session_buffer.py
index 06de98ef6..68be5936a 100644
--- a/plugin/session_buffer.py
+++ b/plugin/session_buffer.py
@@ -681,12 +681,12 @@ def _draw_semantic_tokens_async(self) -> None:
             if region_key not in scope_regions.keys():
                 self.semantic_tokens.active_region_keys.remove(region_key)
                 for sv in self.session_views:
-                    sv.view.erase_regions(f"lsp_semantic_{region_key}")
+                    sv.view.erase_regions(f"lsp_semantic_{self.session.config.name}_{region_key}")
         for region_key, (scope, regions) in scope_regions.items():
             if region_key not in self.semantic_tokens.active_region_keys:
                 self.semantic_tokens.active_region_keys.add(region_key)
             for sv in self.session_views:
-                sv.view.add_regions(f"lsp_semantic_{region_key}", regions, scope, flags=SEMANTIC_TOKEN_FLAGS)
+                sv.view.add_regions(f"lsp_semantic_{self.session.config.name}_{region_key}", regions, scope, flags=SEMANTIC_TOKEN_FLAGS)
 
     def _get_semantic_region_key_for_scope(self, scope: str) -> int:
         if scope not in self._semantic_region_keys:
@@ -696,7 +696,7 @@ def _get_semantic_region_key_for_scope(self, scope: str) -> int:
 
     def _clear_semantic_token_regions(self, view: sublime.View) -> None:
         for region_key in self.semantic_tokens.active_region_keys:
-            view.erase_regions(f"lsp_semantic_{region_key}")
+            view.erase_regions(f"lsp_semantic_{self.session.config.name}_{region_key}")
 
     def set_semantic_tokens_pending_refresh(self, needs_refresh: bool = True) -> None:
         self.semantic_tokens.needs_refresh = needs_refresh
diff --git a/plugin/session_view.py b/plugin/session_view.py
index 6d4d0c706..cb7bc8acc 100644
--- a/plugin/session_view.py
+++ b/plugin/session_view.py
@@ -141,7 +141,7 @@ def _initialize_region_keys(self) -> None:
         line_modes = ["m", "s"]
         self.view.add_regions(self.CODE_ACTIONS_KEY, r)  # code actions lightbulb icon should always be on top
         for key in range(1, 100):
-            keys.append(f"lsp_semantic_{key}")
+            keys.append(f"lsp_semantic_{self.session.config.name}_{key}")
         if document_highlight_style in ("background", "fill"):
             for kind in DOCUMENT_HIGHLIGHT_KIND_NAMES.values():
                 for mode in line_modes: