diff --git a/package.json b/package.json
index db1d2b79..d9f35418 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
   },
   "dependencies": {
     "lru-cache": "^5.1.1",
-    "lsif-protocol": "0.4.3",
+    "lsif-protocol": "0.5.3",
     "minimist": "^1.2.0",
     "npm": "^6.14.2",
     "typescript-lsif": "https://github.com/dbaeumer/TypeScript/releases/download/4.4.0-beta-lsif.1/lsif-typescript-4.4.0-beta-lsif.1.tgz",
diff --git a/yarn.lock b/yarn.lock
index 81065af4..9113b984 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2995,12 +2995,12 @@ lru-cache@^6.0.0:
   dependencies:
     yallist "^4.0.0"
 
-lsif-protocol@0.4.3:
-  version "0.4.3"
-  resolved "https://registry.npmjs.org/lsif-protocol/-/lsif-protocol-0.4.3.tgz"
-  integrity sha512-VePb+EbdturiWmGw1dh7G7z7OmhT6aBzqU42cqJLEk2QTMTbnN6ySIp1IiffNmD9jLX3NAtNSz1c85zpcZN6pw==
+lsif-protocol@0.5.3:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/lsif-protocol/-/lsif-protocol-0.5.3.tgz#233279e8c6fa7801eeb85549319e3933cb1bc7ad"
+  integrity sha512-zBSB9ixK44jmLiUv8Nwl9bsd/6KFozLML+rXmTU3zqfBmX7QBa6jmvkmzq+0RbUnSNJVOETw1SAOnLnEYePO4Q==
   dependencies:
-    vscode-languageserver-protocol "^3.14.1"
+    vscode-languageserver-protocol "^3.16.0"
 
 lz-string@^1.4.4:
   version "1.4.4"
@@ -5025,9 +5025,9 @@ vscode-jsonrpc@6.0.0:
   resolved "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-6.0.0.tgz"
   integrity sha512-wnJA4BnEjOSyFMvjZdpiOwhSq9uDoK8e/kpRJDTaMYzwlkrhG1fwDIZI94CLsLzlCK5cIbMMtFlJlfR57Lavmg==
 
-vscode-languageserver-protocol@^3.14.1:
+vscode-languageserver-protocol@^3.16.0:
   version "3.16.0"
-  resolved "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.16.0.tgz"
+  resolved "https://registry.yarnpkg.com/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.16.0.tgz#34135b61a9091db972188a07d337406a3cdbe821"
   integrity sha512-sdeUoAawceQdgIfTI+sdcwkiK2KU+2cbEYA0agzM2uqaUy2UpnnGHtWTHVEtS0ES4zHU0eMFRGN+oQgDxlD66A==
   dependencies:
     vscode-jsonrpc "6.0.0"