diff --git a/package-lock.json b/package-lock.json
index faab25d1d..62811c3d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -41,7 +41,7 @@
         "reflect-metadata": "0.1.13",
         "ts-jest": "27.1.4",
         "ts-node": "10.9.2",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       },
       "engines": {
         "node": ">=16.0.0",
@@ -23593,9 +23593,9 @@
       "integrity": "sha512-v3UJF8xm68BBj6AF4oQML3ikrfK2c9EmZUyLOfShpJuItAqVBHWP/KtpGinkSsIiP6EZyyb6Z3NXyW9dgS9X1w=="
     },
     "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",
@@ -24213,12 +24213,6 @@
         "vega-lite": "*"
       }
     },
-    "node_modules/vega-embed/node_modules/yallist": {
-      "version": "4.0.0",
-      "extraneous": true,
-      "inBundle": true,
-      "license": "ISC"
-    },
     "node_modules/vega-encode": {
       "version": "4.9.1",
       "resolved": "https://registry.npmjs.org/vega-encode/-/vega-encode-4.9.1.tgz",
@@ -25468,7 +25462,7 @@
         "prettier": "2.8.7",
         "supertest": "6.3.3",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/convertbot": {
@@ -25505,7 +25499,7 @@
         "npm-run-all": "4.1.5",
         "prettier": "2.8.7",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/frontend": {
@@ -25610,7 +25604,7 @@
         "jest": "27.5.1",
         "prettier": "2.8.7",
         "rollup-plugin-visualizer": "5.9.0",
-        "typescript": "4.6.4",
+        "typescript": "4.9.5",
         "vite": "4.4.12",
         "vite-plugin-rewrite-all": "1.0.1"
       }
@@ -27056,7 +27050,7 @@
         "@types/parsimmon": "1.10.6",
         "jest": "27.5.1",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "packages/slackbot": {
@@ -27090,7 +27084,7 @@
         "npm-run-all": "4.1.5",
         "prettier": "2.8.7",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     }
   },
@@ -31340,7 +31334,7 @@
         "tweetnacl-util": "0.15.1",
         "type-graphql": "1.1.1",
         "typedi": "0.10.0",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "@iex/convertbot": {
@@ -31374,7 +31368,7 @@
         "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": {
@@ -31469,7 +31463,7 @@
         "remark-toc": "8.0.1",
         "rollup-plugin-visualizer": "5.9.0",
         "titleize": "4.0.0",
-        "typescript": "4.6.4",
+        "typescript": "4.9.5",
         "unist-util-visit": "4.0.0",
         "url-join": "4.0.1",
         "urql": "2.2.2",
@@ -32512,7 +32506,7 @@
         "pino-http": "8.3.3",
         "pino-pretty": "10.0.0",
         "ts-jest": "27.1.4",
-        "typescript": "4.6.4"
+        "typescript": "4.9.5"
       }
     },
     "@iex/slackbot": {
@@ -32543,7 +32537,7 @@
         "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": {
@@ -46186,9 +46180,9 @@
       "integrity": "sha512-v3UJF8xm68BBj6AF4oQML3ikrfK2c9EmZUyLOfShpJuItAqVBHWP/KtpGinkSsIiP6EZyyb6Z3NXyW9dgS9X1w=="
     },
     "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": {
@@ -46643,13 +46637,6 @@
         "vega-schema-url-parser": "^2.2.0",
         "vega-themes": "^2.10.0",
         "vega-tooltip": "^0.27.0"
-      },
-      "dependencies": {
-        "yallist": {
-          "version": "4.0.0",
-          "bundled": true,
-          "extraneous": true
-        }
       }
     },
     "vega-encode": {
diff --git a/package.json b/package.json
index f2babe2ec..06dc6558e 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "reflect-metadata": "0.1.13",
     "ts-jest": "27.1.4",
     "ts-node": "10.9.2",
-    "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 d8cb2c3aa..65884e564 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -115,6 +115,6 @@
     "prettier": "2.8.7",
     "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 4b396f37f..4955a35c7 100644
--- a/packages/convertbot/package.json
+++ b/packages/convertbot/package.json
@@ -53,6 +53,6 @@
     "npm-run-all": "4.1.5",
     "prettier": "2.8.7",
     "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 b10ba6683..e252d7567 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -102,7 +102,7 @@
     "jest": "27.5.1",
     "prettier": "2.8.7",
     "rollup-plugin-visualizer": "5.9.0",
-    "typescript": "4.6.4",
+    "typescript": "4.9.5",
     "vite": "4.4.12",
     "vite-plugin-rewrite-all": "1.0.1"
   },
diff --git a/packages/shared/package.json b/packages/shared/package.json
index c9d24aecd..e7c4aaa11 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 ce61a8a36..149c75590 100644
--- a/packages/slackbot/package.json
+++ b/packages/slackbot/package.json
@@ -50,6 +50,6 @@
     "npm-run-all": "4.1.5",
     "prettier": "2.8.7",
     "ts-jest": "27.1.4",
-    "typescript": "4.6.4"
+    "typescript": "4.9.5"
   }
 }