diff --git a/dev/lib/directive-container.js b/dev/lib/directive-container.js
index 8fcc320..ca4f540 100644
--- a/dev/lib/directive-container.js
+++ b/dev/lib/directive-container.js
@@ -6,7 +6,7 @@
  * @typedef {import('micromark-util-types').Tokenizer} Tokenizer
  */
 
-import {ok as assert} from 'uvu/assert'
+import {ok as assert} from 'devlop'
 import {factorySpace} from 'micromark-factory-space'
 import {markdownLineEnding} from 'micromark-util-character'
 import {codes, constants, types} from 'micromark-util-symbol'
diff --git a/dev/lib/directive-leaf.js b/dev/lib/directive-leaf.js
index abf3a40..26acc87 100644
--- a/dev/lib/directive-leaf.js
+++ b/dev/lib/directive-leaf.js
@@ -5,7 +5,7 @@
  * @typedef {import('micromark-util-types').Tokenizer} Tokenizer
  */
 
-import {ok as assert} from 'uvu/assert'
+import {ok as assert} from 'devlop'
 import {factorySpace} from 'micromark-factory-space'
 import {markdownLineEnding} from 'micromark-util-character'
 import {codes, types} from 'micromark-util-symbol'
diff --git a/dev/lib/directive-text.js b/dev/lib/directive-text.js
index 7018eab..aed3600 100644
--- a/dev/lib/directive-text.js
+++ b/dev/lib/directive-text.js
@@ -6,7 +6,7 @@
  * @typedef {import('micromark-util-types').Tokenizer} Tokenizer
  */
 
-import {ok as assert} from 'uvu/assert'
+import {ok as assert} from 'devlop'
 import {codes, types} from 'micromark-util-symbol'
 import {factoryAttributes} from './factory-attributes.js'
 import {factoryLabel} from './factory-label.js'
diff --git a/dev/lib/factory-attributes.js b/dev/lib/factory-attributes.js
index 4d7ea7e..01f5065 100644
--- a/dev/lib/factory-attributes.js
+++ b/dev/lib/factory-attributes.js
@@ -5,7 +5,7 @@
  * @typedef {import('micromark-util-types').TokenType} TokenType
  */
 
-import {ok as assert} from 'uvu/assert'
+import {ok as assert} from 'devlop'
 import {factorySpace} from 'micromark-factory-space'
 import {factoryWhitespace} from 'micromark-factory-whitespace'
 import {
diff --git a/dev/lib/factory-label.js b/dev/lib/factory-label.js
index eac8340..c8a434d 100644
--- a/dev/lib/factory-label.js
+++ b/dev/lib/factory-label.js
@@ -5,7 +5,7 @@
  * @typedef {import('micromark-util-types').TokenType} TokenType
  */
 
-import {ok as assert} from 'uvu/assert'
+import {ok as assert} from 'devlop'
 import {markdownLineEnding} from 'micromark-util-character'
 import {codes, constants, types} from 'micromark-util-symbol'
 
diff --git a/dev/lib/html.js b/dev/lib/html.js
index 087edab..b81c89c 100644
--- a/dev/lib/html.js
+++ b/dev/lib/html.js
@@ -46,7 +46,7 @@
  *   Kind.
  */
 
-import {ok as assert} from 'uvu/assert'
+import {ok as assert} from 'devlop'
 import {parseEntities} from 'parse-entities'
 
 const own = {}.hasOwnProperty
diff --git a/package.json b/package.json
index 0736a91..922c64c 100644
--- a/package.json
+++ b/package.json
@@ -39,13 +39,13 @@
     "default": "./index.js"
   },
   "dependencies": {
+    "devlop": "^1.0.0",
     "micromark-factory-space": "^2.0.0",
     "micromark-factory-whitespace": "^2.0.0",
     "micromark-util-character": "^2.0.0",
     "micromark-util-symbol": "^2.0.0",
     "micromark-util-types": "^2.0.0",
-    "parse-entities": "^4.0.0",
-    "uvu": "^0.5.0"
+    "parse-entities": "^4.0.0"
   },
   "devDependencies": {
     "@types/node": "^20.0.0",