diff --git a/package.json b/package.json
index 31a82618..833fc2b1 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "@salesforce/plugin-command-reference": "^3.1.27",
     "@salesforce/schemas": "^1.9.0",
     "@salesforce/source-testkit": "^2.2.76",
-    "@salesforce/ts-sinon": "^1.4.24",
+    "@salesforce/ts-sinon": "^1.4.28",
     "cross-env": "^7.0.3",
     "eslint-plugin-sf-plugin": "^1.20.9",
     "oclif": "^4.15.16",
diff --git a/yarn.lock b/yarn.lock
index 33cdb1cc..ea72698c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1586,14 +1586,14 @@
     isomorphic-git "^1.27.1"
     ts-retry-promise "^0.8.1"
 
-"@salesforce/ts-sinon@^1.4.24":
-  version "1.4.24"
-  resolved "https://registry.yarnpkg.com/@salesforce/ts-sinon/-/ts-sinon-1.4.24.tgz#944db6ee055172fa1e89de17d7d71740b40795e1"
-  integrity sha512-oTl/WRM958XMtgTNYDSjF86zpvBuHhIiQmI+T0N9Y+KCZ3Ext9gV4gQ5Xd1bBPiht+yv4k0sW5jq/QZPYr6Cyw==
+"@salesforce/ts-sinon@^1.4.28":
+  version "1.4.28"
+  resolved "https://registry.yarnpkg.com/@salesforce/ts-sinon/-/ts-sinon-1.4.28.tgz#77d97c322ba148ba3a53b56e5d24c19aed5ebfea"
+  integrity sha512-Sw7/wYvwOCc2Xdj5JC13DrPNJGl1UF7nH4mYZzu615Y9yKzjNdWBziqPWcoqMGusEfV3y8N67Ve7YFfpfzNqFA==
   dependencies:
     "@salesforce/ts-types" "^2.0.12"
     sinon "^5.1.1"
-    tslib "^2.6.3"
+    tslib "^2.8.0"
 
 "@salesforce/ts-types@^2.0.10", "@salesforce/ts-types@^2.0.11", "@salesforce/ts-types@^2.0.12":
   version "2.0.12"
@@ -7913,10 +7913,10 @@ tsconfig-paths@^3.15.0:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-tslib@^2.0.1, tslib@^2.0.3, tslib@^2.6.2, tslib@^2.6.3:
-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.6.3.tgz#0438f810ad7a9edcde7a241c3d80db693c8cbfe0"
-  integrity sha512-xNvxJEOUiWPGhUuUdQgAJPKOOJfGnIyKySOc09XkKsgdUV/3E2zvwZYdejjmRgPCgcym1juLH3226yA7sEFJKQ==
+tslib@^2.0.1, tslib@^2.0.3, tslib@^2.6.2, tslib@^2.8.0:
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.8.1.tgz#612efe4ed235d567e8aba5f2a5fab70280ade83f"
+  integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==
 
 tunnel-agent@*, tunnel-agent@^0.6.0:
   version "0.6.0"