diff --git a/yarn.lock b/yarn.lock
index 13be61ac..262ec104 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -966,13 +966,13 @@
   integrity sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==
 
 "@salesforce/cli-plugins-testkit@^5":
-  version "5.0.4"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.0.4.tgz#523c459f43822d7b24bff5117aeda7f77ed5e26c"
-  integrity sha512-8pquViVBCd5sF6nBXgLgwymEBE6pSAS376R9qq7rxuV+PSFCC5bnzQaKm2ugY+s5vXKNcV6WcmBHNCQnGv+M7Q==
+  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" "^5.3.20"
+    "@salesforce/core" "^6.4.0"
     "@salesforce/kit" "^3.0.15"
-    "@salesforce/ts-types" "^2.0.6"
+    "@salesforce/ts-types" "^2.0.9"
     "@types/shelljs" "^0.8.15"
     debug "^4.3.1"
     jszip "^3.10.1"
@@ -1004,10 +1004,10 @@
     semver "^7.5.4"
     ts-retry-promise "^0.7.1"
 
-"@salesforce/core@^6.1.0", "@salesforce/core@^6.2.2":
-  version "6.2.2"
-  resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-6.2.2.tgz#c390c7c407e8916ad85a3e300d9d9e4fecfba207"
-  integrity sha512-R2ptk/+KSWDJOqdInxfzPTLF3V//vFtD4vQcjWIK9NaGCCq4ZwiF2gMpkBcKgDQneLUmva2NcmnzF3c51zQp5A==
+"@salesforce/core@^6.1.0", "@salesforce/core@^6.2.2", "@salesforce/core@^6.4.0":
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-6.4.0.tgz#09e856194c8dad5bd0d86e271e84c3c47304f508"
+  integrity sha512-zbUuOll6RnaOyO6vHGjaO6mv2SBimu2JzInubBrbx+bgw5KFVT0y+OrN0gEhBPS94VoC9/N6ZRKve+vQ82zmmA==
   dependencies:
     "@salesforce/kit" "^3.0.15"
     "@salesforce/schemas" "^1.6.1"
@@ -1132,7 +1132,7 @@
     sinon "^5.1.1"
     tslib "^2.6.1"
 
-"@salesforce/ts-types@^2.0.6", "@salesforce/ts-types@^2.0.9":
+"@salesforce/ts-types@^2.0.9":
   version "2.0.9"
   resolved "https://registry.yarnpkg.com/@salesforce/ts-types/-/ts-types-2.0.9.tgz#66bff7b41720065d6b01631b6f6a3ccca02857c5"
   integrity sha512-boUD9jw5vQpTCPCCmK/NFTWjSuuW+lsaxOynkyNXLW+zxOc4GDjhtKc4j0vWZJQvolpafbyS8ZLFHZJvs12gYA==