diff --git a/package.json b/package.json
index c4fb0828..1b4536c8 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   },
   "devDependencies": {
     "@oclif/plugin-command-snapshot": "^5.0.3",
-    "@salesforce/cli-plugins-testkit": "^5.1.0",
+    "@salesforce/cli-plugins-testkit": "^5.1.1",
     "@salesforce/dev-scripts": "^8.1.2",
     "@salesforce/plugin-command-reference": "^3.0.51",
     "@salesforce/plugin-source": "^2.11.4",
diff --git a/test/nuts/seeds/deploy.metadata.metadata-dir.seed.ts b/test/nuts/seeds/deploy.metadata.metadata-dir.seed.ts
index feaab68a..2bc07131 100644
--- a/test/nuts/seeds/deploy.metadata.metadata-dir.seed.ts
+++ b/test/nuts/seeds/deploy.metadata.metadata-dir.seed.ts
@@ -52,7 +52,7 @@ context('deploy metadata --metadata-dir NUTs [name: %REPO_NAME%]', () => {
     }
 
     it('should throw an error if the directory does not exist', async () => {
-      const deploy = await testkit.deploy({ args: '--metadata-dir DOES_NOT_EXIST', exitCode: 1 });
+      const deploy = await testkit.deploy({ args: '--metadata-dir DOES_NOT_EXIST', exitCode: 'nonZero' });
       assert(deploy);
       testkit.expect.errorToHaveName(deploy, 'InvalidFlagPathError');
     });
diff --git a/test/nuts/seeds/deploy.metadata.source-dir.seed.ts b/test/nuts/seeds/deploy.metadata.source-dir.seed.ts
index afc3ef5f..179bb337 100644
--- a/test/nuts/seeds/deploy.metadata.source-dir.seed.ts
+++ b/test/nuts/seeds/deploy.metadata.source-dir.seed.ts
@@ -46,7 +46,7 @@ context('deploy metadata --source-dir NUTs [name: %REPO_NAME%]', () => {
     }
 
     it('should throw an error if the directory does not exist', async () => {
-      const deploy = await testkit.deploy({ args: '--source-dir DOES_NOT_EXIST', exitCode: 1 });
+      const deploy = await testkit.deploy({ args: '--source-dir DOES_NOT_EXIST', exitCode: 'nonZero' });
       assert(deploy);
       testkit.expect.errorToHaveName(deploy, 'SfError');
     });
diff --git a/yarn.lock b/yarn.lock
index bcaa895f..72b068ab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -976,12 +976,12 @@
     istanbul-reports "^3.1.6"
     jsforce "^2.0.0-beta.29"
 
-"@salesforce/cli-plugins-testkit@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.0.tgz#8d9caa22ea9e99879629206892afb26bcd540cef"
-  integrity sha512-P5tYlNqE87lX9Yp2aAsK75PICoAbmrSK3LEqiIVbtn75PN3OKiD1JEEX2ZDu+HWtO4/nxPtO4JFvX5j00EZGBA==
+"@salesforce/cli-plugins-testkit@^5.1.0", "@salesforce/cli-plugins-testkit@^5.1.1":
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.1.tgz#73baef2d27abc6cbb11c82e2869a3b4b57ff342d"
+  integrity sha512-qllBs+dGYIMS7GrJfJaalJSNsNohDAiLLHOZXk8WL+aZ1dRGDaWTiS4gyZKPKgeahXuNPTBxDqNg7WajvfNcxg==
   dependencies:
-    "@salesforce/core" "^6.2.2"
+    "@salesforce/core" "^6.4.0"
     "@salesforce/kit" "^3.0.15"
     "@salesforce/ts-types" "^2.0.9"
     "@types/shelljs" "^0.8.15"