diff --git a/tests/boundary/evm/solidityMetadataWorker.test.ts b/tests/boundary/evm/solidityMetadataWorker.test.ts
index 0577983c45..df72002b5d 100644
--- a/tests/boundary/evm/solidityMetadataWorker.test.ts
+++ b/tests/boundary/evm/solidityMetadataWorker.test.ts
@@ -1,6 +1,7 @@
 import { execFile } from "node:child_process";
 import { readFile, writeFile } from "node:fs/promises";
 import { join } from "node:path";
+import { fileURLToPath } from "node:url";
 import { promisify } from "node:util";
 import { expect, it } from "vitest";
 import { solidityMetadataSchema } from "../../../src/domain/evm/solidityMetadata.js";
@@ -38,8 +39,12 @@ it.each([
       [
         "--max-old-space-size=256",
         "--disable-wasm-trap-handler",
-        new URL("../../../dist/evm/EvmoleInterfaceWorker.js", import.meta.url)
-          .pathname,
+        fileURLToPath(
+          new URL(
+            "../../../dist/evm/EvmoleInterfaceWorker.js",
+            import.meta.url,
+          ),
+        ),
         request,
       ],
       { timeout: 30_000, maxBuffer: 1024 * 1024 },
diff --git a/tests/boundary/filesystem/ciChangeScope.test.ts b/tests/boundary/filesystem/ciChangeScope.test.ts
index 13625bc176..e56c894ba3 100644
--- a/tests/boundary/filesystem/ciChangeScope.test.ts
+++ b/tests/boundary/filesystem/ciChangeScope.test.ts
@@ -416,7 +416,10 @@ it.each(["", "not-a-commit"])(
   },
 );
 
-it("selects only a trusted successful ancestor from recent CI push runs", async () => {
+it("selects only a trusted successful ancestor from recent CI push runs", async ({
+  skip,
+}) => {
+  skip(process.platform === "win32", "the fake gh is a POSIX shell script");
   const { directory, base } = await fixture();
   const head = await change(directory, ["src/evm/client.ts"]);
   const bin = join(directory, "fake-bin");
@@ -449,7 +452,11 @@ it("selects only a trusted successful ancestor from recent CI push runs", async
   const output = join(directory, "baseline-output");
   const result = await execFileAsync(
     process.execPath,
-    [new URL("../../../scripts/ci/baseline.mjs", import.meta.url).pathname],
+    [
+      fileURLToPath(
+        new URL("../../../scripts/ci/baseline.mjs", import.meta.url),
+      ),
+    ],
     {
       cwd: directory,
       env: {
@@ -467,7 +474,8 @@ it("selects only a trusted successful ancestor from recent CI push runs", async
   expect(await readFile(output, "utf8")).toBe(`base=${base}\nreason=\n`);
 });
 
-it("returns an empty baseline when GitHub lookup fails", async () => {
+it("returns an empty baseline when GitHub lookup fails", async ({ skip }) => {
+  skip(process.platform === "win32", "the fake gh is a POSIX shell script");
   const { directory, base } = await fixture();
   const head = await change(directory, ["src/evm/client.ts"]);
   const bin = join(directory, "fake-bin");
@@ -477,7 +485,11 @@ it("returns an empty baseline when GitHub lookup fails", async () => {
   await chmod(gh, 0o755);
   const result = await execFileAsync(
     process.execPath,
-    [new URL("../../../scripts/ci/baseline.mjs", import.meta.url).pathname],
+    [
+      fileURLToPath(
+        new URL("../../../scripts/ci/baseline.mjs", import.meta.url),
+      ),
+    ],
     {
       cwd: directory,
       env: {
diff --git a/tests/boundary/filesystem/releaseWorkflow.test.ts b/tests/boundary/filesystem/releaseWorkflow.test.ts
index 712ed8945e..8dac943392 100644
--- a/tests/boundary/filesystem/releaseWorkflow.test.ts
+++ b/tests/boundary/filesystem/releaseWorkflow.test.ts
@@ -1,6 +1,7 @@
 import { execFile } from "node:child_process";
 import { readFile, writeFile } from "node:fs/promises";
 import { delimiter, join } from "node:path";
+import { fileURLToPath } from "node:url";
 import { promisify } from "node:util";
 import { expect, it } from "vitest";
 import { parse } from "yaml";
@@ -348,7 +349,7 @@ it("binds npm and MCP publication to the same immutable release SHA", async () =
       import.meta.url,
     );
     const result = await execFileAsync(process.execPath, [
-      helper.pathname,
+      fileURLToPath(helper),
       version,
     ]);
     expect(result.stdout).toBe(tag);
diff --git a/tests/boundary/providers/hopper/hopperBridgeFacade.test.ts b/tests/boundary/providers/hopper/hopperBridgeFacade.test.ts
index a4be456735..f47f579fac 100644
--- a/tests/boundary/providers/hopper/hopperBridgeFacade.test.ts
+++ b/tests/boundary/providers/hopper/hopperBridgeFacade.test.ts
@@ -1,4 +1,5 @@
 import { execFile } from "node:child_process";
+import { fileURLToPath } from "node:url";
 import { promisify } from "node:util";
 
 import { describe, expect, it } from "vitest";
@@ -133,7 +134,7 @@ describe("Hopper API facade", () => {
   it("imports without Hopper globals and gates exhaustive work during analysis", async () => {
     const { stdout } = await execute(
       "python3",
-      [probePath.pathname, bridgePath.pathname],
+      [fileURLToPath(probePath), fileURLToPath(bridgePath)],
       {
         encoding: "utf8",
         timeout: 3_000,