diff --git a/index.html b/index.html
index 886f5c7..96d0f5c 100644
--- a/index.html
+++ b/index.html
@@ -1256,7 +1256,7 @@
         <div class="dropdown-item" data-lang="j">
             <img src="assets/j_logo.svg" alt="J">
             <span class="lang-name">J</span>
-            <span class="lang-version">J9.8.0-beta2</span>
+            <span class="lang-version">J9.8.0-beta3</span>
         </div>
         <div class="dropdown-item" data-lang="kap">
             <img src="assets/kap.png" alt="Kap">
diff --git a/scripts/generate-og-languages.cjs b/scripts/generate-og-languages.cjs
index 8ef10e6..f91b5a8 100644
--- a/scripts/generate-og-languages.cjs
+++ b/scripts/generate-og-languages.cjs
@@ -31,7 +31,7 @@ const LANGS = [
     { name: 'BQN',     version: 'CBQN 0.11',        file: 'bqn.svg' },
     { name: 'Uiua',    version: '0.19.0-dev.4',      file: 'uiua.png' },
     // Row 2
-    { name: 'J',       version: 'J9.8.0-beta2',    file: 'j_logo.svg' },
+    { name: 'J',       version: 'J9.8.0-beta3',    file: 'j_logo.svg' },
     { name: 'Kap',     version: '2026-05-15',        file: 'kap.png' },
     { name: 'TinyAPL', version: '0.13-beta',         file: 'tinyapl.svg' },
 ];
diff --git a/scripts/known-versions.json b/scripts/known-versions.json
index 5a3634f..c556ea7 100644
--- a/scripts/known-versions.json
+++ b/scripts/known-versions.json
@@ -1,7 +1,8 @@
 {
   "cbqn": "v0.11.0",
+  "uiua": "0.19.0-dev.3",
+  "j": "9.8.0-beta3",
   "uiua": "0.19.0-dev.4",
-  "j": "9.8.0-beta2",
   "kap": "20260515-1",
   "tinyapl": "0.12.0"
 }
diff --git a/wasm/j/emj.wasm b/wasm/j/emj.wasm
index 461301e..4d79f74 100644
Binary files a/wasm/j/emj.wasm and b/wasm/j/emj.wasm differ