diff --git a/ROADMAP.md b/ROADMAP.md
index 8d58bf3..c5a7488 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -361,7 +361,7 @@
 - [ ] "restrict-plus-operands"
 - [ ] "restrict-template-expressions"
 - [ ] "return-await"
-- [ ] "semi"
+- [X] "semi"
 - [ ] "space-before-function-paren"
 - [ ] "strict-boolean-expressions"
 - [ ] "switch-exhaustiveness-check"
diff --git a/src/rules/typescript/default.json b/src/rules/typescript/default.json
index 216245a..4504f4e 100644
--- a/src/rules/typescript/default.json
+++ b/src/rules/typescript/default.json
@@ -7,7 +7,17 @@
       "avoidEscape": false
     }
   ],
+  "@typescript-eslint/semi": [
+    "error",
+    "always",
+    {
+      "omitLastInOneLineBlock": false
+    }
+  ],
   "quotes": [
     "off"
+  ],
+  "semi": [
+    "off"
   ]
 }