diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3302ed7..1a6dc91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changes to cssdb
 
+### 8.2.1 (November 11, 2024)
+
+- Added `sign-functions` plugin link
+
 ### 8.2.0 (November 11, 2024)
 
 - Added `random-function`
diff --git a/cssdb.json b/cssdb.json
index de50513..9ba60aa 100644
--- a/cssdb.json
+++ b/cssdb.json
@@ -2045,6 +2045,12 @@
       "mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/sign"
     },
     "example": "div {\n  order: abs(-10);\n  order: sign(-10);\n}",
+    "polyfills": [
+      {
+        "type": "PostCSS Plugin",
+        "link": "https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-sign-functions"
+      }
+    ],
     "vendors_implementations": 2
   },
   {
diff --git a/cssdb.mjs b/cssdb.mjs
index 4879c6f..936456b 100644
--- a/cssdb.mjs
+++ b/cssdb.mjs
@@ -2045,6 +2045,12 @@ export default [
       "mdn": "https://developer.mozilla.org/en-US/docs/Web/CSS/sign"
     },
     "example": "div {\n  order: abs(-10);\n  order: sign(-10);\n}",
+    "polyfills": [
+      {
+        "type": "PostCSS Plugin",
+        "link": "https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-sign-functions"
+      }
+    ],
     "vendors_implementations": 2
   },
   {
diff --git a/cssdb.settings.json b/cssdb.settings.json
index 10881d0..c28af8c 100644
--- a/cssdb.settings.json
+++ b/cssdb.settings.json
@@ -1518,6 +1518,12 @@
     "mdn_path": [
       "css.types.abs",
       "css.types.sign"
+    ],
+    "polyfills": [
+      {
+        "type": "PostCSS Plugin",
+        "link": "https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-sign-functions"
+      }
     ]
   },
   {
diff --git a/package-lock.json b/package-lock.json
index 42f7ea8..56b40a7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cssdb",
-  "version": "8.2.0",
+  "version": "8.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cssdb",
-      "version": "8.2.0",
+      "version": "8.2.1",
       "funding": [
         {
           "type": "opencollective",
diff --git a/package.json b/package.json
index b54068a..6bd740b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cssdb",
-  "version": "8.2.0",
+  "version": "8.2.1",
   "type": "module",
   "description": "A comprehensive list of CSS features and their positions in the process of becoming implemented web standards",
   "license": "MIT-0",