diff --git a/eslint-config.yaml b/eslint-config.yaml
index 1620846368..e5425648d7 100644
--- a/eslint-config.yaml
+++ b/eslint-config.yaml
@@ -105,6 +105,10 @@ rules:
   '@typescript-eslint/require-await':
     - error
 
+  '@typescript-eslint/semi':
+    - error
+    - 'always'
+
   '@typescript-eslint/type-annotation-spacing':
     - error
 
diff --git a/packages/codemaker/lib/filebuff.ts b/packages/codemaker/lib/filebuff.ts
index 1a290ef033..133a5b9f47 100644
--- a/packages/codemaker/lib/filebuff.ts
+++ b/packages/codemaker/lib/filebuff.ts
@@ -1,5 +1,5 @@
-import * as fs from 'fs-extra'
-import * as path from 'path'
+import * as fs from 'fs-extra';
+import * as path from 'path';
 
 /**
  * Buffers the text of a file for later saving.
diff --git a/packages/codemaker/lib/index.ts b/packages/codemaker/lib/index.ts
index b50cc3de5d..2cd8c07819 100644
--- a/packages/codemaker/lib/index.ts
+++ b/packages/codemaker/lib/index.ts
@@ -1,2 +1,2 @@
-export * from './codemaker'
-export * from './case-utils'
\ No newline at end of file
+export * from './codemaker';
+export * from './case-utils';
\ No newline at end of file
diff --git a/packages/jsii-kernel/test/kernel.test.ts b/packages/jsii-kernel/test/kernel.test.ts
index 44579a73f8..475f8962ee 100644
--- a/packages/jsii-kernel/test/kernel.test.ts
+++ b/packages/jsii-kernel/test/kernel.test.ts
@@ -44,7 +44,7 @@ function defineTest(name: string, method: (sandbox: Kernel) => Promise<any> | an
 
 defineTest.skip = function (name: string, method: (sandbox: Kernel) => Promise<any> | any) {
   return defineTest(name, method, test.skip);
-}
+};
 
 defineTest('stats() return sandbox statistics', (sandbox) => {
   const stats = sandbox.stats({ });
@@ -842,7 +842,7 @@ defineTest('loading a module twice idepotently succeeds', async (sandbox) => {
 defineTest('fails if trying to load two different versions of the same module', async (sandbox) => {
   const tarball = await preparePackage('jsii-calc', false);
   return expect(() => sandbox.load({ tarball, name: 'jsii-calc', version: '99.999.9' }))
-    .toThrow(/Multiple versions .+ and .+ of the package 'jsii-calc' cannot be loaded together/)
+    .toThrow(/Multiple versions .+ and .+ of the package 'jsii-calc' cannot be loaded together/);
 });
 
 defineTest('node.js standard library', async (sandbox) => {
diff --git a/packages/jsii-pacmak/bin/jsii-pacmak.ts b/packages/jsii-pacmak/bin/jsii-pacmak.ts
index 969d7dd4f6..028af791e8 100644
--- a/packages/jsii-pacmak/bin/jsii-pacmak.ts
+++ b/packages/jsii-pacmak/bin/jsii-pacmak.ts
@@ -120,7 +120,7 @@ import { ALL_BUILDERS, TargetName } from '../lib/targets';
   });
 
   try {
-    const requestedTargets = argv.targets && argv.targets.map(t => `${t}`)
+    const requestedTargets = argv.targets && argv.targets.map(t => `${t}`);
     const targetSets = sliceTargets(modulesToPackage, requestedTargets, argv['force-target']);
 
     if (targetSets.every(s => s.modules.length === 0)) {
@@ -202,7 +202,7 @@ function allAvailableTargets(modules: JsiiModule[]) {
   const ret = new Set<string>();
   for (const module of modules) {
     for (const target of module.availableTargets) {
-      ret.add(target)
+      ret.add(target);
     }
   }
   return Array.from(ret);
diff --git a/packages/jsii-pacmak/lib/generator.ts b/packages/jsii-pacmak/lib/generator.ts
index d235149fa9..14eddc3553 100644
--- a/packages/jsii-pacmak/lib/generator.ts
+++ b/packages/jsii-pacmak/lib/generator.ts
@@ -122,7 +122,7 @@ export abstract class Generator implements IGenerator {
       throw new Error('Malformed assembly name. Expecting either <name> or @<scope>/<name>');
     }
 
-    return `${name}@${this.assembly.version}.jsii.tgz`
+    return `${name}@${this.assembly.version}.jsii.tgz`;
   }
 
   /**
@@ -208,9 +208,9 @@ export abstract class Generator implements IGenerator {
 
   protected onBeginMethods(_cls: spec.ClassType) { /* noop */ }
   protected abstract onMethod(cls: spec.ClassType, method: spec.Method): void;
-  protected abstract onMethodOverload(cls: spec.ClassType, overload: spec.Method, originalMethod: spec.Method): void
+  protected abstract onMethodOverload(cls: spec.ClassType, overload: spec.Method, originalMethod: spec.Method): void;
   protected abstract onStaticMethod(cls: spec.ClassType, method: spec.Method): void;
-  protected abstract onStaticMethodOverload(cls: spec.ClassType, overload: spec.Method, originalMethod: spec.Method): void
+  protected abstract onStaticMethodOverload(cls: spec.ClassType, overload: spec.Method, originalMethod: spec.Method): void;
   protected onEndMethods(_cls: spec.ClassType) { /* noop */ }
 
   //
@@ -240,8 +240,8 @@ export abstract class Generator implements IGenerator {
     const visitChildren = () => {
       Object.keys(node.children).sort().forEach(name => {
         this.visit(node.children[name], names.concat(name));
-      })
-    }
+      });
+    };
 
     if (node.fqn) {
       const type = this.assembly.types && this.assembly.types[node.fqn];
@@ -262,7 +262,7 @@ export abstract class Generator implements IGenerator {
             this.onEndClass(classSpec);
             break;
           case spec.TypeKind.Enum:
-            const enumSpec = type as spec.EnumType
+            const enumSpec = type as spec.EnumType;
             this.onBeginEnum(enumSpec);
             this.visitEnum(enumSpec);
             visitChildren();
@@ -331,7 +331,7 @@ export abstract class Generator implements IGenerator {
     //
 
     const remaining: spec.Parameter[] = clone(method.parameters);
-    let next: spec.Parameter | undefined
+    let next: spec.Parameter | undefined;
 
     next = remaining.pop();
     // Parameter is optional if it's type is optional, and all subsequent parameters are optional/variadic
@@ -352,7 +352,7 @@ export abstract class Generator implements IGenerator {
     if (ifc.properties) {
       ifc.properties.forEach(prop => {
         this.onInterfaceProperty(ifc, prop);
-      })
+      });
     }
 
     if (ifc.methods) {
@@ -406,7 +406,7 @@ export abstract class Generator implements IGenerator {
         if (this.hasField(cls, prop)) {
           this.onField(cls, prop, spec.isUnionTypeReference(prop.type) ? prop.type : undefined);
         }
-      })
+      });
 
       cls.properties.forEach(prop => {
         if (!spec.isUnionTypeReference(prop.type)) {
diff --git a/packages/jsii-runtime/lib/host.ts b/packages/jsii-runtime/lib/host.ts
index e8b396b1fc..9fbc13cf67 100644
--- a/packages/jsii-runtime/lib/host.ts
+++ b/packages/jsii-runtime/lib/host.ts
@@ -20,7 +20,7 @@ export class KernelHost {
     this.processRequest(req, () => {
       // Schedule the call to run on the next event loop iteration to
       // avoid recursion.
-      setImmediate(() => this.run())
+      setImmediate(() => this.run());
     });
   }
 
diff --git a/packages/jsii-runtime/lib/in-out.ts b/packages/jsii-runtime/lib/in-out.ts
index 304502dd87..799969daa1 100644
--- a/packages/jsii-runtime/lib/in-out.ts
+++ b/packages/jsii-runtime/lib/in-out.ts
@@ -1,5 +1,5 @@
-import { SyncStdio } from './sync-stdio'
-import { api } from 'jsii-kernel'
+import { SyncStdio } from './sync-stdio';
+import { api } from 'jsii-kernel';
 
 export type Output =
     { hello: string } |
@@ -13,7 +13,7 @@ export type Input =
     { complete: api.CompleteRequest };
 
 export class InputOutput {
-  public debug = false
+  public debug = false;
 
   private readonly stdio = new SyncStdio();
 
diff --git a/packages/jsii-runtime/lib/sync-stdio.ts b/packages/jsii-runtime/lib/sync-stdio.ts
index 4d36d600d6..a4a9e8d1e8 100644
--- a/packages/jsii-runtime/lib/sync-stdio.ts
+++ b/packages/jsii-runtime/lib/sync-stdio.ts
@@ -1,4 +1,4 @@
-import * as fs from 'fs'
+import * as fs from 'fs';
 
 const STDIN_FD = 0;
 const STDOUT_FD = 1;