diff --git a/package-lock.json b/package-lock.json
index 03a4585e..53758e35 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,7 +38,7 @@
         "prettier": "3.5.3",
         "publint": "0.3.10",
         "semantic-release": "24.2.3",
-        "sinon": "19.0.5",
+        "sinon": "20.0.0",
         "tempy": "3.1.0"
       },
       "engines": {
@@ -1705,13 +1705,6 @@
         "node": ">=4"
       }
     },
-    "node_modules/@sinonjs/text-encoding": {
-      "version": "0.7.3",
-      "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.3.tgz",
-      "integrity": "sha512-DE427ROAphMQzU4ENbliGYrBSYPXF+TtLg9S8vzeA+OF4ZKzoDdzfL8sxuMUGS/lgRhM6j1URSk9ghf7Xo1tyA==",
-      "dev": true,
-      "license": "(Unlicense OR Apache-2.0)"
-    },
     "node_modules/@tootallnate/once": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz",
@@ -7060,13 +7053,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/just-extend": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/just-extend/-/just-extend-6.2.0.tgz",
-      "integrity": "sha512-cYofQu2Xpom82S6qD778jBDpwvvy39s1l/hrYij2u9AMdQcGRpaBu6kY4mVhuno5kJVi1DAz4aiphA2WI1/OAw==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/lines-and-columns": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/lines-and-columns/-/lines-and-columns-1.2.4.tgz",
@@ -8289,30 +8275,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/nise": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/nise/-/nise-6.1.1.tgz",
-      "integrity": "sha512-aMSAzLVY7LyeM60gvBS423nBmIPP+Wy7St7hsb+8/fc1HmeoHJfLO8CKse4u3BtOZvQLJghYPI2i/1WZrEj5/g==",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "dependencies": {
-        "@sinonjs/commons": "^3.0.1",
-        "@sinonjs/fake-timers": "^13.0.1",
-        "@sinonjs/text-encoding": "^0.7.3",
-        "just-extend": "^6.2.0",
-        "path-to-regexp": "^8.1.0"
-      }
-    },
-    "node_modules/nise/node_modules/path-to-regexp": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.2.0.tgz",
-      "integrity": "sha512-TdrF7fW9Rphjq4RjrW0Kp2AW0Ahwu9sRGTkS6bvDi0SCwZlEZYmcfDbEsTz8RVk0EHIS/Vd1bv3JhG+1xZuAyQ==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=16"
-      }
-    },
     "node_modules/node-emoji": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/node-emoji/-/node-emoji-2.2.0.tgz",
@@ -14144,9 +14106,9 @@
       }
     },
     "node_modules/sinon": {
-      "version": "19.0.5",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-19.0.5.tgz",
-      "integrity": "sha512-r15s9/s+ub/d4bxNXqIUmwp6imVSdTorIRaxoecYjqTVLZ8RuoXr/4EDGwIBo6Waxn7f2gnURX9zuhAfCwaF6Q==",
+      "version": "20.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-20.0.0.tgz",
+      "integrity": "sha512-+FXOAbdnj94AQIxH0w1v8gzNxkawVvNqE3jUzRLptR71Oykeu2RrQXXl/VQjKay+Qnh73fDt/oDfMo6xMeDQbQ==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
@@ -14154,7 +14116,6 @@
         "@sinonjs/fake-timers": "^13.0.5",
         "@sinonjs/samsam": "^8.0.1",
         "diff": "^7.0.0",
-        "nise": "^6.1.1",
         "supports-color": "^7.2.0"
       },
       "funding": {
diff --git a/package.json b/package.json
index 1e4698c0..5478057b 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "prettier": "3.5.3",
     "publint": "0.3.10",
     "semantic-release": "24.2.3",
-    "sinon": "19.0.5",
+    "sinon": "20.0.0",
     "tempy": "3.1.0"
   },
   "engines": {