diff --git a/package-lock.json b/package-lock.json
index 146c4b50ce..50e2b2f485 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,7 +40,7 @@
         "reflect-metadata": "0.1.13",
         "ts-jest": "27.1.4",
         "ts-node": "10.8.1",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       },
       "engines": {
         "node": ">=16.0.0",
@@ -22576,9 +22576,9 @@
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     },
     "node_modules/typescript": {
-      "version": "4.6.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.6.4.tgz",
-      "integrity": "sha512-9ia/jWHIEbo49HfjrLGfKbZSuWo9iTMwXO+Ca3pRsSpbsMbc7/IU8NKdCZVRRBafVPGnoJeFL76ZOAA84I9fEg==",
+      "version": "4.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
+      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -24533,7 +24533,7 @@
         "prettier": "2.7.1",
         "supertest": "6.3.3",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/backend/node_modules/axios": {
@@ -24584,7 +24584,7 @@
         "npm-run-all": "4.1.5",
         "prettier": "2.7.1",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/frontend": {
@@ -24689,7 +24689,7 @@
         "jest": "27.5.1",
         "prettier": "2.7.1",
         "rollup-plugin-visualizer": "5.9.0",
-        "typescript": "4.6.4",
+        "typescript": "4.9.5",
         "vite": "4.0.4",
         "vite-plugin-rewrite-all": "1.0.1"
       }
@@ -26134,7 +26134,7 @@
         "@types/parsimmon": "1.10.6",
         "jest": "27.5.1",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/slackbot": {
@@ -26168,7 +26168,7 @@
         "npm-run-all": "4.1.5",
         "prettier": "2.7.1",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     }
   },
@@ -28592,7 +28592,7 @@
         "tweetnacl-util": "0.15.1",
         "type-graphql": "1.1.1",
         "typedi": "0.10.0",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       },
       "dependencies": {
         "axios": {
@@ -28642,7 +28642,7 @@
         "reflect-metadata": "0.1.13",
         "tmp-promise": "3.0.3",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "@iex/frontend": {
@@ -28737,7 +28737,7 @@
         "remark-toc": "8.0.1",
         "rollup-plugin-visualizer": "5.9.0",
         "titleize": "3.0.0",
-        "typescript": "4.6.4",
+        "typescript": "4.9.5",
         "unist-util-visit": "4.0.0",
         "url-join": "4.0.1",
         "urql": "2.2.2",
@@ -29785,7 +29785,7 @@
         "pino-http": "8.1.0",
         "pino-pretty": "8.1.0",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "@iex/slackbot": {
@@ -29816,7 +29816,7 @@
         "reflect-metadata": "0.1.13",
         "tmp-promise": "3.0.3",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "@istanbuljs/load-nyc-config": {
@@ -44426,9 +44426,9 @@
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     },
     "typescript": {
-      "version": "4.6.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.6.4.tgz",
-      "integrity": "sha512-9ia/jWHIEbo49HfjrLGfKbZSuWo9iTMwXO+Ca3pRsSpbsMbc7/IU8NKdCZVRRBafVPGnoJeFL76ZOAA84I9fEg==",
+      "version": "4.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
+      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
       "dev": true
     },
     "ua-parser-js": {
diff --git a/package.json b/package.json
index f9af639376..9b340e9cac 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "reflect-metadata": "0.1.13",
     "ts-jest": "27.1.4",
     "ts-node": "10.8.1",
-    "typescript": "4.6.4"
+    "typescript": "4.9.5"
   },
   "scripts": {
     "license:thirdparty": "ts-node scripts/third-party.ts",
diff --git a/packages/backend/package.json b/packages/backend/package.json
index b131c70f5a..b56ce1d4a4 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -115,6 +115,6 @@
     "prettier": "2.7.1",
     "supertest": "6.3.3",
     "ts-jest": "27.1.4",
-    "typescript": "4.6.4"
+    "typescript": "4.9.5"
   }
 }
diff --git a/packages/convertbot/package.json b/packages/convertbot/package.json
index a821d2b40a..ec868eaf33 100644
--- a/packages/convertbot/package.json
+++ b/packages/convertbot/package.json
@@ -53,6 +53,6 @@
     "npm-run-all": "4.1.5",
     "prettier": "2.7.1",
     "ts-jest": "27.1.4",
-    "typescript": "4.6.4"
+    "typescript": "4.9.5"
   }
 }
diff --git a/packages/frontend/package.json b/packages/frontend/package.json
index cc19304ace..336f8ff707 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -102,7 +102,7 @@
     "jest": "27.5.1",
     "prettier": "2.7.1",
     "rollup-plugin-visualizer": "5.9.0",
-    "typescript": "4.6.4",
+    "typescript": "4.9.5",
     "vite": "4.0.4",
     "vite-plugin-rewrite-all": "1.0.1"
   },
diff --git a/packages/shared/package.json b/packages/shared/package.json
index 2d457ba5b8..751c98dc44 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -36,6 +36,6 @@
     "@types/parsimmon": "1.10.6",
     "jest": "27.5.1",
     "ts-jest": "27.1.4",
-    "typescript": "4.6.4"
+    "typescript": "4.9.5"
   }
 }
diff --git a/packages/slackbot/package.json b/packages/slackbot/package.json
index 2088b9511d..b818d99eb3 100644
--- a/packages/slackbot/package.json
+++ b/packages/slackbot/package.json
@@ -50,6 +50,6 @@
     "npm-run-all": "4.1.5",
     "prettier": "2.7.1",
     "ts-jest": "27.1.4",
-    "typescript": "4.6.4"
+    "typescript": "4.9.5"
   }
 }