diff --git a/lib/config/groups.js b/lib/config/groups.js
index 6db1138..56d6c49 100644
--- a/lib/config/groups.js
+++ b/lib/config/groups.js
@@ -831,6 +831,11 @@ module.exports.groups = [
           },
         ],
       },
+      {
+        type: 'Deprecated Border Opacity',
+        members: 'border\\-opacity\\-(?<value>${borderOpacity})',
+        deprecated: true,
+      },
       {
         type: 'Border Style',
         members: 'border\\-(solid|dashed|dotted|double|hidden|none)',
diff --git a/lib/rules/migration-from-tailwind-2.js b/lib/rules/migration-from-tailwind-2.js
index 3a6a94a..6e40fe8 100644
--- a/lib/rules/migration-from-tailwind-2.js
+++ b/lib/rules/migration-from-tailwind-2.js
@@ -21,7 +21,7 @@ const parserUtil = require('../util/parser');
 const CLASSNAME_NOT_NEEDED_MSG = `Classname '{{classnames}}' is not needed in Tailwind CSS v3!`;
 const CLASSNAMES_NOT_NEEDED_MSG = `Classnames '{{classnames}}' are not needed in Tailwind CSS v3!`;
 const CLASSNAME_CHANGED_MSG = `Classname '{{deprecated}}' should be updated to '{{updated}}' in Tailwind CSS v3!`;
-const BG_OPACITY_DEPRECATED_MSG = `Classname '{{classname}}' should be replaced by an opacity suffix (eg. '/{{value}}')`;
+const OPACITY_CLASS_DEPRECATED_MSG = `Classname '{{classname}}' should be replaced by an opacity suffix (eg. '/{{value}}')`;
 
 module.exports = {
   meta: {
@@ -35,7 +35,7 @@ module.exports = {
       classnameNotNeeded: CLASSNAME_NOT_NEEDED_MSG,
       classnamesNotNeeded: CLASSNAMES_NOT_NEEDED_MSG,
       classnameChanged: CLASSNAME_CHANGED_MSG,
-      bgOpacityDeprecated: BG_OPACITY_DEPRECATED_MSG,
+      classnameOpacityDeprecated: OPACITY_CLASS_DEPRECATED_MSG,
     },
     fixable: 'code',
     schema: [
@@ -185,7 +185,7 @@ module.exports = {
           const fixRegex = new RegExp(`decoration\-${boxVal}`);
           outdated.push([cls, cls.replace(fixRegex, `box-decoration\-${boxVal}`)]);
         }
-        let bgOpacityRes = /^(bg|ring)\-opacity\-(?<value>\d{1,})$/i.exec(suffix);
+        let bgOpacityRes = /^(bg|border|ring)\-opacity\-(?<value>\d{1,})$/i.exec(suffix);
         if (bgOpacityRes && bgOpacityRes.groups && bgOpacityRes.groups.value) {
           const opacityVal = bgOpacityRes.groups.value;
           deprecatedBgOpacity.push([cls, opacityVal]);
@@ -233,7 +233,7 @@ module.exports = {
       deprecatedBgOpacity.forEach((bgClass) => {
         context.report({
           node,
-          messageId: 'bgOpacityDeprecated',
+          messageId: 'classnameOpacityDeprecated',
           data: {
             classname: bgClass[0],
             value: bgClass[1],
diff --git a/lib/util/groupMethods.js b/lib/util/groupMethods.js
index c079a04..d77438c 100644
--- a/lib/util/groupMethods.js
+++ b/lib/util/groupMethods.js
@@ -201,6 +201,7 @@ function generateOptions(propName, keys, config, isNegative = false) {
       }
       return '(' + escapedKeys.join('|') + ')';
     case 'backgroundOpacity':
+    case 'borderOpacity':
     case 'opacity':
     case 'ringOpacity':
       // 0 ... .5 ... 1
diff --git a/tests/lib/rules/migration-from-tailwind-2.js b/tests/lib/rules/migration-from-tailwind-2.js
index 26b8be8..257c029 100644
--- a/tests/lib/rules/migration-from-tailwind-2.js
+++ b/tests/lib/rules/migration-from-tailwind-2.js
@@ -156,7 +156,7 @@ ruleTester.run("migration-from-tailwind-2", rule, {
       code: `<div class="bg-opacity-50">bg-opacity</div>`,
       errors: [
         {
-          messageId: "bgOpacityDeprecated",
+          messageId: "classnameOpacityDeprecated",
           data: {
             classname: "bg-opacity-50",
             value: "50",
@@ -165,15 +165,22 @@ ruleTester.run("migration-from-tailwind-2", rule, {
       ],
     },
     {
-      code: `<div class="ring-opacity-50">ring-opacity</div>`,
+      code: `<div class="ring-opacity-50 border-opacity-50">ring-opacity</div>`,
       errors: [
         {
-          messageId: "bgOpacityDeprecated",
+          messageId: "classnameOpacityDeprecated",
           data: {
             classname: "ring-opacity-50",
             value: "50",
           },
         },
+        {
+          messageId: "classnameOpacityDeprecated",
+          data: {
+            classname: "border-opacity-50",
+            value: "50",
+          },
+        },
       ],
     },
     {
diff --git a/tests/lib/rules/no-custom-classname.js b/tests/lib/rules/no-custom-classname.js
index 39996e6..9fd522f 100644
--- a/tests/lib/rules/no-custom-classname.js
+++ b/tests/lib/rules/no-custom-classname.js
@@ -602,7 +602,7 @@ ruleTester.run("no-custom-classname", rule, {
     },
     {
       code: `
-      <div class="decoration-clone decoration-slice flex-grow flex-shrink overflow-clip overflow-ellipsis bg-opacity-50 transform scale-50">Deprecated classnames yet still supported for now</div>`,
+      <div class="decoration-clone decoration-slice flex-grow flex-shrink overflow-clip overflow-ellipsis bg-opacity-50 border-opacity-100 transform scale-50">Deprecated classnames yet still supported for now</div>`,
     },
   ],