diff --git a/packages/mg-assetscraper-db/package.json b/packages/mg-assetscraper-db/package.json
index 5d23e4fa5..55b1bd152 100644
--- a/packages/mg-assetscraper-db/package.json
+++ b/packages/mg-assetscraper-db/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "c8": "10.1.3",
diff --git a/packages/mg-beehiiv-members/package.json b/packages/mg-beehiiv-members/package.json
index 1847013eb..760246998 100644
--- a/packages/mg-beehiiv-members/package.json
+++ b/packages/mg-beehiiv-members/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "c8": "10.1.3",
diff --git a/packages/mg-beehiiv/package.json b/packages/mg-beehiiv/package.json
index a1d7cfe6e..ff419fcfb 100644
--- a/packages/mg-beehiiv/package.json
+++ b/packages/mg-beehiiv/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "c8": "10.1.3",
diff --git a/packages/mg-buttondown/package.json b/packages/mg-buttondown/package.json
index effa2c31c..b801ae5d4 100644
--- a/packages/mg-buttondown/package.json
+++ b/packages/mg-buttondown/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "c8": "10.1.3",
diff --git a/packages/mg-context/package.json b/packages/mg-context/package.json
index 39809a6c6..9104edbb6 100644
--- a/packages/mg-context/package.json
+++ b/packages/mg-context/package.json
@@ -30,13 +30,13 @@
   },
   "devDependencies": {
     "@types/jest": "30.0.0",
-    "@types/sinon": "17.0.4",
+    "@types/sinon": "21.0.0",
     "@typescript-eslint/eslint-plugin": "8.38.0",
     "@typescript-eslint/parser": "8.38.0",
     "c8": "10.1.3",
     "eslint": "8.57.0",
     "jest": "30.0.5",
-    "sinon": "21.0.0",
+    "sinon": "21.0.1",
     "typescript": "5.8.3"
   },
   "dependencies": {
diff --git a/packages/mg-html-lexical/package.json b/packages/mg-html-lexical/package.json
index 43693c146..fdcffefdf 100644
--- a/packages/mg-html-lexical/package.json
+++ b/packages/mg-html-lexical/package.json
@@ -31,13 +31,13 @@
   "devDependencies": {
     "@tryghost/listr-smart-renderer": "0.5.21",
     "@types/jest": "30.0.0",
-    "@types/sinon": "17.0.4",
+    "@types/sinon": "21.0.0",
     "@typescript-eslint/eslint-plugin": "8.38.0",
     "@typescript-eslint/parser": "8.38.0",
     "c8": "10.1.3",
     "eslint": "8.57.0",
     "jest": "30.0.5",
-    "sinon": "21.0.0",
+    "sinon": "21.0.1",
     "typescript": "5.8.3"
   },
   "dependencies": {
diff --git a/packages/mg-mailchimp-members/package.json b/packages/mg-mailchimp-members/package.json
index 7fda37630..284ece5d9 100644
--- a/packages/mg-mailchimp-members/package.json
+++ b/packages/mg-mailchimp-members/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "c8": "10.1.3",
diff --git a/packages/mg-medium-members/package.json b/packages/mg-medium-members/package.json
index 710c9478b..ac737f29c 100644
--- a/packages/mg-medium-members/package.json
+++ b/packages/mg-medium-members/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "c8": "10.1.3",
diff --git a/packages/mg-stripe/package.json b/packages/mg-stripe/package.json
index 7443f896f..e6fada782 100644
--- a/packages/mg-stripe/package.json
+++ b/packages/mg-stripe/package.json
@@ -32,7 +32,7 @@
   "devDependencies": {
     "@types/inquirer": "^9.0.3",
     "@types/jest": "^30.0.0",
-    "@types/sinon": "^17.0.0",
+    "@types/sinon": "^21.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "dotenv": "17.2.0",
diff --git a/yarn.lock b/yarn.lock
index 2b2bc729e..d54c10cee 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1625,7 +1625,7 @@
   dependencies:
     type-detect "4.0.8"
 
-"@sinonjs/fake-timers@^13.0.0", "@sinonjs/fake-timers@^13.0.5":
+"@sinonjs/fake-timers@^13.0.0":
   version "13.0.5"
   resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-13.0.5.tgz#36b9dbc21ad5546486ea9173d6bea063eb1717d5"
   integrity sha512-36/hTbH2uaWuGVERyC6da9YwGWnzUZXuPro/F2LfsdOsLnCojz/iSH8MxUt/FD2S5XBSVPhmArFUXcpCQ2Hkiw==
@@ -1639,7 +1639,7 @@
   dependencies:
     "@sinonjs/commons" "^3.0.1"
 
-"@sinonjs/samsam@^8.0.1", "@sinonjs/samsam@^8.0.3":
+"@sinonjs/samsam@^8.0.3":
   version "8.0.3"
   resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-8.0.3.tgz#eb6ffaef421e1e27783cc9b52567de20cb28072d"
   integrity sha512-hw6HbX+GyVZzmaYNh82Ecj1vdGZrqVIn/keDTg63IgAwiQPO+xCz99uG6Woqgb4tM0mUiFENKZ4cqd7IX94AXQ==
@@ -3998,10 +3998,10 @@
   dependencies:
     "@types/node" "*"
 
-"@types/sinon@17.0.4", "@types/sinon@^17.0.0":
-  version "17.0.4"
-  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-17.0.4.tgz#fd9a3e8e07eea1a3f4a6f82a972c899e5778f369"
-  integrity sha512-RHnIrhfPO3+tJT0s7cFaXGZvsL4bbR3/k7z3P312qMS4JaS2Tk+KiwiLx1S0rQ56ERj00u1/BtdyVd0FY+Pdew==
+"@types/sinon@21.0.0", "@types/sinon@^21.0.0":
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-21.0.0.tgz#3a598a29b3aec0512a21e57ae0fd4c09aa013ca9"
+  integrity sha512-+oHKZ0lTI+WVLxx1IbJDNmReQaIsQJjN2e7UUrJHEeByG7bFeKJYsv1E75JxTQ9QKJDp21bAa/0W2Xo4srsDnw==
   dependencies:
     "@types/sinonjs__fake-timers" "*"
 
@@ -5900,11 +5900,6 @@ diff@^4.0.1:
   resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
   integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
 
-diff@^7.0.0:
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-7.0.0.tgz#3fb34d387cd76d803f6eebea67b921dab0182a9a"
-  integrity sha512-PJWHUb1RFevKCwaFA9RlG5tCd+FO5iRh9A8HEtkmBH2Li03iJriB6m6JIN4rGz3K3JLawI7/veA1xzRKP6ISBw==
-
 diff@^8.0.2:
   version "8.0.2"
   resolved "https://registry.yarnpkg.com/diff/-/diff-8.0.2.tgz#712156a6dd288e66ebb986864e190c2fc9eddfae"
@@ -10858,18 +10853,7 @@ simple-swizzle@^0.2.2:
   dependencies:
     is-arrayish "^0.3.1"
 
-sinon@21.0.0:
-  version "21.0.0"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-21.0.0.tgz#dbda73abc7e6cb803fef3368cfbecbb5936e8a9e"
-  integrity sha512-TOgRcwFPbfGtpqvZw+hyqJDvqfapr1qUlOizROIk4bBLjlsjlB00Pg6wMFXNtJRpu+eCZuVOaLatG7M8105kAw==
-  dependencies:
-    "@sinonjs/commons" "^3.0.1"
-    "@sinonjs/fake-timers" "^13.0.5"
-    "@sinonjs/samsam" "^8.0.1"
-    diff "^7.0.0"
-    supports-color "^7.2.0"
-
-sinon@^21.0.0:
+sinon@21.0.1, sinon@^21.0.0:
   version "21.0.1"
   resolved "https://registry.yarnpkg.com/sinon/-/sinon-21.0.1.tgz#36b9126065a44906f7ba4a47b723b99315a8c356"
   integrity sha512-Z0NVCW45W8Mg5oC/27/+fCqIHFnW8kpkFOq0j9XJIev4Ld0mKmERaZv5DMLAb9fGCevjKwaEeIQz5+MBXfZcDw==