diff --git a/package.json b/package.json
index 97efd3a7a..4dfe619e9 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "jest": "25.5.4",
     "prettier": "2.6.2",
     "ts-jest": "25.5.1",
-    "typescript": "3.9.10",
+    "typescript": "4.6.4",
     "vscode-languageserver": "6.1.1"
   },
   "dependencies": {},
diff --git a/server/src/analyser.ts b/server/src/analyser.ts
index 66af8766d..6762ed60a 100644
--- a/server/src/analyser.ts
+++ b/server/src/analyser.ts
@@ -59,8 +59,9 @@ export default class Analyzer {
       try {
         filePaths = await getFilePaths({ globPattern, rootPath })
       } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : error
         connection.window.showWarningMessage(
-          `Failed to analyze bash files using the glob "${globPattern}". The experience will be degraded. Error: ${error.message}`,
+          `Failed to analyze bash files using the glob "${globPattern}". The experience will be degraded. Error: ${errorMessage}`,
         )
       }
 
@@ -84,7 +85,8 @@ export default class Analyzer {
 
           analyzer.analyze(uri, LSP.TextDocument.create(uri, 'shell', 1, fileContent))
         } catch (error) {
-          connection.console.warn(`Failed analyzing ${uri}. Error: ${error.message}`)
+          const errorMessage = error instanceof Error ? error.message : error
+          connection.console.warn(`Failed analyzing ${uri}. Error: ${errorMessage}`)
         }
       }
 
diff --git a/server/src/server.ts b/server/src/server.ts
index 50a7002c3..7c4bfbc25 100644
--- a/server/src/server.ts
+++ b/server/src/server.ts
@@ -248,8 +248,9 @@ export default class BashServer {
           }
         }
       } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : error
         this.connection.console.warn(
-          `getExplainshellDocumentation exception: ${error.message}`,
+          `getExplainshellDocumentation exception: ${errorMessage}`,
         )
       }
     }
diff --git a/yarn.lock b/yarn.lock
index 34e6e257a..f51a293c7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3476,10 +3476,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@3.9.10:
-  version "3.9.10"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.10.tgz#70f3910ac7a51ed6bef79da7800690b19bf778b8"
-  integrity sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==
+typescript@4.6.4:
+  version "4.6.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.6.4.tgz#caa78bbc3a59e6a5c510d35703f6a09877ce45e9"
+  integrity sha512-9ia/jWHIEbo49HfjrLGfKbZSuWo9iTMwXO+Ca3pRsSpbsMbc7/IU8NKdCZVRRBafVPGnoJeFL76ZOAA84I9fEg==
 
 uri-js@^4.2.2:
   version "4.4.1"