diff --git a/integration/src/tsc.test.mts b/integration/src/tsc.test.mts
index 94a1428..d235ee1 100644
--- a/integration/src/tsc.test.mts
+++ b/integration/src/tsc.test.mts
@@ -214,7 +214,10 @@ describe("tsc", (suiteCtx) => {
   test("tsconfig", async (testCtx) => {
     const dir = getTestDir(suiteCtx, testCtx);
     const script = "script.mts";
-    writeFileSync(join(dir, script), "console.log('Hello World!');\n");
+    writeFileSync(
+      join(dir, script),
+      "function greet(msg): void { console.log(msg); }\ngreet('Hello World!');\n",
+    );
 
     const tsConfig = join(dir, "tsconfig.json");
     writeFileSync(
@@ -223,10 +226,8 @@ describe("tsc", (suiteCtx) => {
         {
           files: [script],
           compilerOptions: {
+            noImplicitAny: false,
             outDir: "myOutput",
-            declaration: true,
-            strict: true,
-            alwaysStrict: true,
             skipLibCheck: true,
           },
         },
@@ -239,7 +240,10 @@ describe("tsc", (suiteCtx) => {
     const tsc = makeTSCRule(ninja);
     const typecheck = makeTypeCheckRule(ninja);
 
-    const out = await tsc({ tsConfig: "tsconfig.json" });
+    const out = await tsc({
+      tsConfig: "tsconfig.json",
+      compilerOptions: { declaration: true },
+    });
     assert.deepEqual(out, ["myOutput/script.mjs", "myOutput/script.d.mts"]);
 
     const typechecked = await typecheck({
@@ -250,6 +254,19 @@ describe("tsc", (suiteCtx) => {
       { file: "script.mts", [validations]: "typechecked.stamp" },
     ]);
 
+    const failed = await typecheck({
+      tsConfig: "tsconfig.json",
+      out: "failed.stamp",
+      compilerOptions: {
+        noImplicitAny: true,
+      },
+    });
+    assert.deepEqual(failed, [
+      { file: "script.mts", [validations]: "failed.stamp" },
+    ]);
+
+    const err = ninja.phony({ out: "err", in: failed[0][validations] });
+    ninja.default(...out, typechecked[0][validations]);
     writeFileSync(join(dir, "build.ninja"), ninja.output);
 
     {
@@ -269,6 +286,14 @@ describe("tsc", (suiteCtx) => {
     }
 
     assert.strictEqual(callNinja(dir).trimEnd(), "ninja: no work to do.");
+
+    {
+      const { stdout } = callNinjaWithFailure(dir, err);
+      assert.match(
+        stdout,
+        /error TS7006: Parameter 'msg' implicitly has an 'any' type/,
+      );
+    }
   });
 
   // TODO: Check the `incremental` flag works correctly
diff --git a/packages/tsc/package.json b/packages/tsc/package.json
index 08b62ad..f630e20 100644
--- a/packages/tsc/package.json
+++ b/packages/tsc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ninjutsu-build/tsc",
-  "version": "0.12.4",
+  "version": "0.12.5",
   "description": "Create a ninjutsu-build rule for running the TypeScript compiler (tsc)",
   "author": "Elliot Goodrich",
   "scripts": {
diff --git a/packages/tsc/src/tsc.ts b/packages/tsc/src/tsc.ts
index f30dc5d..7d218fa 100644
--- a/packages/tsc/src/tsc.ts
+++ b/packages/tsc/src/tsc.ts
@@ -157,6 +157,7 @@ export type TypeCheckRuleFn = {
 
   <O2 extends string>(a: {
     tsConfig: string;
+    compilerOptions?: CompilerOptions;
     out: O2;
     [implicitDeps]?: string | readonly string[];
     [orderOnlyDeps]?: Input<string> | readonly Input<string>[];
@@ -167,12 +168,12 @@ export type TypeCheckRuleFn = {
     a: (
       | {
           in: readonly Input<string>[];
-          compilerOptions?: CompilerOptions;
         }
       | {
           tsConfig: Input<string>;
         }
     ) & {
+      compilerOptions?: CompilerOptions;
       out: O3;
       [implicitDeps]?: string | readonly string[];
       [orderOnlyDeps]?: Input<string> | readonly Input<string>[];
@@ -241,12 +242,12 @@ export function makeTypeCheckRule(
     a: (
       | {
           in: readonly Input<string>[];
-          compilerOptions?: CompilerOptions;
         }
       | {
           tsConfig: Input<string>;
         }
     ) & {
+      compilerOptions?: CompilerOptions;
       out: O;
       [implicitDeps]?: string | readonly string[];
       [orderOnlyDeps]?: Input<string> | readonly Input<string>[];
@@ -270,7 +271,7 @@ export function makeTypeCheckRule(
       const typechecked = typecheck({
         in: [a.tsConfig],
         out: a.out,
-        args: "-p",
+        args: compilerOptionsToString(a.compilerOptions ?? {}) + " -p",
       });
       return getFileNames(ninja, a.tsConfig).then(({ files }) =>
         files.map((file) => ({
@@ -293,6 +294,7 @@ export type TSCRuleFn = {
   }): string[];
   (a: {
     tsConfig: Input<string>;
+    compilerOptions?: CompilerOptions;
     [implicitDeps]?: string | readonly string[];
     [orderOnlyDeps]?: Input<string> | readonly Input<string>[];
     [implicitOut]?: string | readonly string[];
@@ -302,12 +304,12 @@ export type TSCRuleFn = {
     a: (
       | {
           in: readonly Input<string>[];
-          compilerOptions?: CompilerOptions;
         }
       | {
           tsConfig: Input<string>;
         }
     ) & {
+      compilerOptions?: CompilerOptions;
       [implicitDeps]?: string | readonly string[];
       [orderOnlyDeps]?: Input<string> | readonly Input<string>[];
       [implicitOut]?: string | readonly string[];
@@ -399,12 +401,12 @@ export function makeTSCRule(ninja: NinjaBuilder, name = "tsc"): TSCRuleFn {
     a: (
       | {
           in: readonly Input<string>[];
-          compilerOptions?: CompilerOptions;
         }
       | {
           tsConfig: Input<string>;
         }
     ) & {
+      compilerOptions?: CompilerOptions;
       [implicitDeps]?: string | readonly string[];
       [orderOnlyDeps]?: Input<string> | readonly Input<string>[];
       [implicitOut]?: string | readonly string[];
@@ -441,14 +443,21 @@ export function makeTSCRule(ninja: NinjaBuilder, name = "tsc"): TSCRuleFn {
     } else {
       const {
         tsConfig,
+        compilerOptions: overrideOptions = {},
         [implicitOut]: _implicitOut = [],
         [validations]: _validations,
         ...rest
       } = a;
       return getFileNames(ninja, tsConfig).then(
         ({ files, compilerOptions }) => {
+          const finalCompilerOptions = {
+            ...compilerOptions,
+            ...overrideOptions,
+          };
           const commandLine = ts.parseCommandLine(
-            files.concat(compilerOptionsToArrayBestEffort(compilerOptions)),
+            files.concat(
+              compilerOptionsToArrayBestEffort(finalCompilerOptions),
+            ),
           );
 
           // We need to set this to something, else we get a debug exception
@@ -462,7 +471,7 @@ export function makeTSCRule(ninja: NinjaBuilder, name = "tsc"): TSCRuleFn {
             ...rest,
             in: [tsConfig],
             out: out[0],
-            args: "-p",
+            args: compilerOptionsToString(finalCompilerOptions) + " -p",
             [implicitOut]: out.slice(1).concat(_implicitOut),
             [validations]:
               _validations === undefined ? undefined : () => _validations(out),