diff --git a/package.json b/package.json
index c8bd588..4a97f46 100644
--- a/package.json
+++ b/package.json
@@ -913,7 +913,7 @@
   "license": "MIT",
   "devDependencies": {
     "@types/node": "^12.12.12",
-    "coc.nvim": "^0.0.81-next.11",
+    "coc.nvim": "^0.0.81-next.23",
     "esbuild": "^0.14.11",
     "semver": "^7.3.5",
     "vscode-languageserver-protocol": "^3.16.0",
diff --git a/src/server/features/fileConfigurationManager.ts b/src/server/features/fileConfigurationManager.ts
index 42d9acc..49184c0 100644
--- a/src/server/features/fileConfigurationManager.ts
+++ b/src/server/features/fileConfigurationManager.ts
@@ -87,7 +87,13 @@ export default class FileConfigurationManager {
   }
 
   public async ensureConfigurationForDocument(document: TextDocument, token: CancellationToken): Promise<void> {
-    let opts = await workspace.getFormatOptions(document.uri)
+    let opts: { insertSpaces: boolean, tabSize: number }
+    let cached = this.cachedMap.get(document.uri)
+    if (cached) {
+      opts = { insertSpaces: cached.formatOptions.convertTabsToSpaces, tabSize: cached.formatOptions.tabSize }
+    } else {
+      opts = await workspace.getFormatOptions(document.uri)
+    }
     return this.ensureConfigurationOptions(document, opts.insertSpaces, opts.tabSize, token)
   }
 
diff --git a/yarn.lock b/yarn.lock
index d538c56..a37f5dc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7,10 +7,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.20.41.tgz#81d7734c5257da9f04354bd9084a6ebbdd5198a5"
   integrity sha512-f6xOqucbDirG7LOzedpvzjP3UTmHttRou3Mosx3vL9wr9AIQGhcPgVnqa8ihpZYnxyM1rxeNCvTyukPKZtq10Q==
 
-coc.nvim@^0.0.81-next.11:
-  version "0.0.81-next.11"
-  resolved "https://registry.yarnpkg.com/coc.nvim/-/coc.nvim-0.0.81-next.11.tgz#2ac44f770da662adbaf30678edc837715016fe90"
-  integrity sha512-XxRRdpK67tVJH+zvwi4bHc9e/UJWBj2ZJdY8Q9/Twp0tgipDstoCqK3KeoszT79J7whPzS/1Y/8VG7dRNrMJ4w==
+coc.nvim@^0.0.81-next.23:
+  version "0.0.81-next.23"
+  resolved "https://registry.yarnpkg.com/coc.nvim/-/coc.nvim-0.0.81-next.23.tgz#48d8238afaaa0738c6237d8c077ba1791e2f90c6"
+  integrity sha512-RxNx6iRz7UvdgDeMVLyNXP6xe8GU8aY0Qxl/sBI+m2RzAJDRKCPuyFU1uOSxZntLglWtzKd87k3Byymdm19uBQ==
 
 esbuild-android-arm64@0.14.11:
   version "0.14.11"