diff --git a/package.json b/package.json
index 4eea33d..1e6944d 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,6 @@
     "prettier": "^2.1.2",
     "ts-generator": "^0.1.1",
     "ts-node": "^10.2.1",
-    "typescript": "^3.9.7"
+    "typescript": "^4.9.4"
   }
 }
diff --git a/packages/compiler/package.json b/packages/compiler/package.json
index 8ef3eee..12d68bd 100644
--- a/packages/compiler/package.json
+++ b/packages/compiler/package.json
@@ -41,7 +41,7 @@
     "nyc": "15.0.1",
     "solc": "0.6.1",
     "ts-node": "10.2.1",
-    "typescript": "3.8.3"
+    "typescript": "4.9.4"
   },
   "dependencies": {
     "@contractshark/flattener": "0.17.1",
diff --git a/packages/contractshark-cli/package.json b/packages/contractshark-cli/package.json
index 9cd33ec..d03a62e 100644
--- a/packages/contractshark-cli/package.json
+++ b/packages/contractshark-cli/package.json
@@ -68,7 +68,7 @@
     "nyc": "15.0.1",
     "solc": "0.6.1",
     "ts-node": "10.2.1",
-    "typescript": "3.8.3",
+    "typescript": "4.9.4",
     "web3": "1.2.7"
   },
   "dependencies": {
diff --git a/packages/contractshark/package.json b/packages/contractshark/package.json
index 18a967f..74b61ed 100644
--- a/packages/contractshark/package.json
+++ b/packages/contractshark/package.json
@@ -39,7 +39,7 @@
     "ava": "3.15.0",
     "nyc": "15.0.1",
     "ts-node": "10.2.1",
-    "typescript": "3.8.3"
+    "typescript": "4.9.4"
   },
   "dependencies": {
     "fs-extra": "9.0.0"
diff --git a/packages/ecc-auth/package.json b/packages/ecc-auth/package.json
index bd561c3..1d0fe6b 100644
--- a/packages/ecc-auth/package.json
+++ b/packages/ecc-auth/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@types/express": "^4.17.7",
     "@types/secp256k1": "^4.0.1",
-    "typescript": "^3.9.7"
+    "typescript": "^4.9.4"
   },
   "dependencies": {
     "secp256k1": "^4.0.2"
diff --git a/packages/flattener/package.json b/packages/flattener/package.json
index c8e9bbf..95441b0 100644
--- a/packages/flattener/package.json
+++ b/packages/flattener/package.json
@@ -38,7 +38,7 @@
     "ava": "3.15.0",
     "nyc": "15.0.1",
     "ts-node": "10.2.1",
-    "typescript": "3.8.3"
+    "typescript": "4.9.4"
   },
   "dependencies": {
     "@contractshark/reporter": "0.10.0",
diff --git a/packages/logic/package-lock.json b/packages/logic/package-lock.json
index 7b6e650..d18997d 100644
--- a/packages/logic/package-lock.json
+++ b/packages/logic/package-lock.json
@@ -3110,9 +3110,9 @@
       }
     },
     "typescript": {
-      "version": "3.9.7",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.7.tgz",
-      "integrity": "sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==",
+      "version": "4.9.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz",
+      "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==",
       "dev": true
     },
     "unique-string": {
diff --git a/packages/logic/package.json b/packages/logic/package.json
index 70be6dc..71f530f 100644
--- a/packages/logic/package.json
+++ b/packages/logic/package.json
@@ -60,7 +60,7 @@
     "ava": "3.15.0",
     "nyc": "^15.0.1",
     "ts-node": "^10.2.1",
-    "typescript": "^3.8.3"
+    "typescript": "^4.9.4"
   },
   "dependencies": {
     "axios": "^0.21.0"
diff --git a/packages/orchestator/package.json b/packages/orchestator/package.json
index ebc0ab4..3188da6 100644
--- a/packages/orchestator/package.json
+++ b/packages/orchestator/package.json
@@ -16,7 +16,7 @@
   "devDependencies": {
     "nodemon": "^1.18.11",
     "tslint": "^5.15.0",
-    "typescript": "^3.4.3"
+    "typescript": "^4.9.4"
   },
   "dependencies": {
     "@types/bpmn-moddle": "^5.1.1",
diff --git a/packages/reporter/package.json b/packages/reporter/package.json
index 5273755..e2c5d0f 100644
--- a/packages/reporter/package.json
+++ b/packages/reporter/package.json
@@ -60,7 +60,7 @@
     "ava": "3.15.0",
     "nyc": "^15.0.1",
     "ts-node": "^10.2.1",
-    "typescript": "^3.8.3"
+    "typescript": "^4.9.4"
   },
   "dependencies": {
     "@contractshark/logic": "^0.10.0",
diff --git a/packages/runner/package.json b/packages/runner/package.json
index 7e5f382..f4ec7c4 100644
--- a/packages/runner/package.json
+++ b/packages/runner/package.json
@@ -60,7 +60,7 @@
     "ava": "3.15.0",
     "nyc": "^15.0.1",
     "ts-node": "^10.2.1",
-    "typescript": "^3.8.3"
+    "typescript": "^4.9.4"
   },
   "dependencies": {
     "@contractshark/logic": "^0.10.0",
diff --git a/packages/sandbox/package-lock.json b/packages/sandbox/package-lock.json
index 6dc76c6..20319b6 100644
--- a/packages/sandbox/package-lock.json
+++ b/packages/sandbox/package-lock.json
@@ -3842,9 +3842,9 @@
       }
     },
     "typescript": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.3.tgz",
-      "integrity": "sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==",
+      "version": "4.9.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz",
+      "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==",
       "dev": true
     },
     "unique-string": {
diff --git a/packages/sandbox/package.json b/packages/sandbox/package.json
index 865d0a0..ef90a24 100644
--- a/packages/sandbox/package.json
+++ b/packages/sandbox/package.json
@@ -41,7 +41,7 @@
     "nyc": "15.1.0",
     "supertest": "6.1.6",
     "ts-node": "10.2.1",
-    "typescript": "4.1.3"
+    "typescript": "4.9.4"
   },
   "dependencies": {
     "ganache-cli": "6.9.1"
diff --git a/packages/spec/package.json b/packages/spec/package.json
index ea9afeb..7b032cb 100644
--- a/packages/spec/package.json
+++ b/packages/spec/package.json
@@ -39,7 +39,7 @@
     "ava": "3.15.0",
     "nyc": "15.0.1",
     "ts-node": "10.2.1",
-    "typescript": "3.8.3",
+    "typescript": "4.9.4",
     "web3": "1.2.7"
   },
   "peerDependencies": {