diff --git a/tests/corpus/1541-fs-readdir-dirent.ts b/tests/corpus/1541-fs-readdir-dirent.ts
index ac30ab615..8db6243b2 100644
--- a/tests/corpus/1541-fs-readdir-dirent.ts
+++ b/tests/corpus/1541-fs-readdir-dirent.ts
@@ -15,7 +15,7 @@ function tail(path: string): string {
   }
   return path.slice(i + 1);
 }
-const dir = `/tmp/scr-dirent-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}`;
+const dir = `/tmp/scr-dirent-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}-${process.pid}`;
 if (fs.existsSync(dir)) fs.rmSync(dir, { recursive: true, force: true });
 fs.mkdirSync(dir);
 fs.mkdirSync(`${dir}/sub-a`);
diff --git a/tests/corpus/5565-fs-dirent-untyped.mjs b/tests/corpus/5565-fs-dirent-untyped.mjs
index acb5be704..9751c3d1f 100644
--- a/tests/corpus/5565-fs-dirent-untyped.mjs
+++ b/tests/corpus/5565-fs-dirent-untyped.mjs
@@ -9,7 +9,7 @@ function tail(path) {
   while (i >= 0 && path.charAt(i) !== "/" && path.charAt(i) !== "\\") i = i - 1;
   return path.slice(i + 1);
 }
-const dir = `/tmp/scr-dirent-untyped-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}`;
+const dir = `/tmp/scr-dirent-untyped-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}-${process.pid}`;
 if (fs.existsSync(dir)) fs.rmSync(dir, { recursive: true, force: true });
 fs.mkdirSync(`${dir}/sub`, { recursive: true });
 fs.writeFileSync(`${dir}/a.txt`, "x");
diff --git a/tests/corpus/5567-fs-cpsync.ts b/tests/corpus/5567-fs-cpsync.ts
index 7e258ca85..ef736ec92 100644
--- a/tests/corpus/5567-fs-cpsync.ts
+++ b/tests/corpus/5567-fs-cpsync.ts
@@ -8,7 +8,7 @@ function tail(path: string): string {
   while (i >= 0 && path.charAt(i) !== "/" && path.charAt(i) !== "\\") i = i - 1;
   return path.slice(i + 1);
 }
-const root = `/tmp/scr-cpsync-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}`;
+const root = `/tmp/scr-cpsync-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}-${process.pid}`;
 if (fs.existsSync(root)) fs.rmSync(root, { recursive: true, force: true });
 fs.mkdirSync(root);
 const home = process.cwd();
diff --git a/tests/corpus/5568-fs-cp-errors.js b/tests/corpus/5568-fs-cp-errors.js
index e9a87f14e..9089d612c 100644
--- a/tests/corpus/5568-fs-cp-errors.js
+++ b/tests/corpus/5568-fs-cp-errors.js
@@ -11,7 +11,7 @@ function tail(path) {
   while (i >= 0 && path.charAt(i) !== "/" && path.charAt(i) !== "\\") i = i - 1;
   return path.slice(i + 1);
 }
-const root = `/tmp/scr-cp-errors-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}`;
+const root = `/tmp/scr-cp-errors-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}-${process.pid}`;
 if (fs.existsSync(root)) fs.rmSync(root, { recursive: true, force: true });
 fs.mkdirSync(root);
 const home = process.cwd();
diff --git a/tests/corpus/5569-fs-cp-symlinks.ts b/tests/corpus/5569-fs-cp-symlinks.ts
index ae4621ce6..2bc3c8ba4 100644
--- a/tests/corpus/5569-fs-cp-symlinks.ts
+++ b/tests/corpus/5569-fs-cp-symlinks.ts
@@ -9,7 +9,7 @@ function tail(path: string): string {
   while (i >= 0 && path.charAt(i) !== "/" && path.charAt(i) !== "\\") i = i - 1;
   return path.slice(i + 1);
 }
-const root = `/tmp/scr-cp-links-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}`;
+const root = `/tmp/scr-cp-links-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}-${process.pid}`;
 if (fs.existsSync(root)) fs.rmSync(root, { recursive: true, force: true });
 fs.mkdirSync(root);
 const home = process.cwd();
diff --git a/tests/corpus/5570-fs-cp-async.ts b/tests/corpus/5570-fs-cp-async.ts
index 9f3ce6c87..d83750095 100644
--- a/tests/corpus/5570-fs-cp-async.ts
+++ b/tests/corpus/5570-fs-cp-async.ts
@@ -9,7 +9,7 @@ function tail(path: string): string {
   while (i >= 0 && path.charAt(i) !== "/" && path.charAt(i) !== "\\") i = i - 1;
   return path.slice(i + 1);
 }
-const root = `/tmp/scr-cp-async-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}`;
+const root = `/tmp/scr-cp-async-${tail(process.argv[1] === undefined ? "x" : process.argv[1])}-${process.pid}`;
 if (fs.existsSync(root)) fs.rmSync(root, { recursive: true, force: true });
 fs.mkdirSync(root);
 const home = process.cwd();