diff --git a/package-lock.json b/package-lock.json
index 4378b7c011..df54cde91e 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",
@@ -22429,9 +22429,9 @@
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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",
@@ -24427,7 +24427,7 @@
         "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": {
@@ -24478,7 +24478,7 @@
         "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": {
@@ -24583,7 +24583,7 @@
         "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"
       }
@@ -26103,7 +26103,7 @@
         "@types/parsimmon": "1.10.6",
         "jest": "27.5.1",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/slackbot": {
@@ -26137,7 +26137,7 @@
         "npm-run-all": "4.1.5",
         "prettier": "2.7.1",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     }
   },
@@ -28437,7 +28437,7 @@
         "tweetnacl-util": "0.15.1",
         "type-graphql": "1.1.1",
         "typedi": "0.10.0",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       },
       "dependencies": {
         "axios": {
@@ -28487,7 +28487,7 @@
         "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": {
@@ -28582,7 +28582,7 @@
         "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",
@@ -29937,7 +29937,7 @@
         "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": {
@@ -29968,7 +29968,7 @@
         "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": {
@@ -44529,9 +44529,9 @@
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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 fa8aeec15d..69562c707c 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 b759715610..8a7994dbc3 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 a6327080bf..fd41f56e0a 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 219a030c14..ff431cfd50 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 d6468eb153..2719f59b1c 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 92b5e28b46..6ca56bf60d 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"
   }
 }