diff --git a/htdocs/package-lock.json b/htdocs/package-lock.json
index b439141302..bd1dd2f4cb 100644
--- a/htdocs/package-lock.json
+++ b/htdocs/package-lock.json
@@ -8,7 +8,7 @@
             "license": "GPL-2.0+",
             "dependencies": {
                 "@fortawesome/fontawesome-free": "^6.5.2",
-                "@openwebwork/pg-codemirror-editor": "^0.0.1-beta.6",
+                "@openwebwork/pg-codemirror-editor": "^0.0.1-beta.13",
                 "bootstrap": "~5.3.3",
                 "flatpickr": "^4.6.13",
                 "iframe-resizer": "^4.3.11",
@@ -364,9 +364,9 @@
             }
         },
         "node_modules/@openwebwork/codemirror-lang-pg": {
-            "version": "0.0.1-beta.5",
-            "resolved": "https://registry.npmjs.org/@openwebwork/codemirror-lang-pg/-/codemirror-lang-pg-0.0.1-beta.5.tgz",
-            "integrity": "sha512-7TAI1h/V9+2pwhM/AJtj5HZyDHDqN4ly1dEiW1klaXbv4AX0aYQr8aCU9PYrUOEUJnWH7JKWgh26ft/Ti+r71g==",
+            "version": "0.0.1-beta.7",
+            "resolved": "https://registry.npmjs.org/@openwebwork/codemirror-lang-pg/-/codemirror-lang-pg-0.0.1-beta.7.tgz",
+            "integrity": "sha512-DdUXwYnGx34qXI2apTA3J7kmfcAHdEJcf0T0AwNeGZ+VdV9OmmDc89rGL1FN07V0n31RN1J1g8DEmYOb6QQFpA==",
             "license": "MIT",
             "dependencies": {
                 "@codemirror/language": "^6.10.2",
@@ -375,15 +375,15 @@
             }
         },
         "node_modules/@openwebwork/pg-codemirror-editor": {
-            "version": "0.0.1-beta.7",
-            "resolved": "https://registry.npmjs.org/@openwebwork/pg-codemirror-editor/-/pg-codemirror-editor-0.0.1-beta.7.tgz",
-            "integrity": "sha512-ILrr+/8hX0HYLvfg6LD1sOJt44073Wofus187K39p6RWBArXGvZ2GQvHCwReVxj+z0CzHnbJ4lKFyVF+UEY+SA==",
+            "version": "0.0.1-beta.13",
+            "resolved": "https://registry.npmjs.org/@openwebwork/pg-codemirror-editor/-/pg-codemirror-editor-0.0.1-beta.13.tgz",
+            "integrity": "sha512-AdNLmHaZsoIp+MDHIdguWTIBmqddOyDma/q0OXb6SQe49feY3DRBIOm7Fy75rv/KbChm9m9TOuQ0y9nUDXpLsw==",
             "license": "MIT",
             "dependencies": {
                 "@codemirror/lang-html": "^6.4.9",
                 "@codemirror/lang-xml": "^6.1.0",
                 "@codemirror/theme-one-dark": "^6.1.2",
-                "@openwebwork/codemirror-lang-pg": "^0.0.1-beta.5",
+                "@openwebwork/codemirror-lang-pg": "^0.0.1-beta.7",
                 "@replit/codemirror-emacs": "^6.1.0",
                 "@replit/codemirror-vim": "^6.2.1",
                 "cm6-theme-basic-dark": "^0.2.0",
@@ -395,6 +395,7 @@
                 "cm6-theme-solarized-dark": "^0.2.0",
                 "cm6-theme-solarized-light": "^0.2.0",
                 "codemirror": "^6.0.1",
+                "codemirror-lang-mt": "^0.0.2-beta.1",
                 "codemirror-lang-perl": "^0.1.5-beta.1",
                 "thememirror": "^2.0.1"
             }
@@ -794,6 +795,20 @@
                 "@codemirror/view": "^6.0.0"
             }
         },
+        "node_modules/codemirror-lang-mt": {
+            "version": "0.0.2-beta.1",
+            "resolved": "https://registry.npmjs.org/codemirror-lang-mt/-/codemirror-lang-mt-0.0.2-beta.1.tgz",
+            "integrity": "sha512-KfWdRQJmeeAiXrU72JHDwwFkZkWaO0yHmhXurdJhVYrRNc/TAOlDHOulA9lQBkritcoFoo2UyyybuoE2FWHtFw==",
+            "license": "MIT",
+            "dependencies": {
+                "@codemirror/lang-css": "^6.3.0",
+                "@codemirror/lang-html": "^6.4.9",
+                "@codemirror/lang-javascript": "^6.2.2",
+                "@codemirror/language": "^6.10.2",
+                "@lezer/highlight": "^1.2.1",
+                "@lezer/lr": "^1.4.2"
+            }
+        },
         "node_modules/codemirror-lang-perl": {
             "version": "0.1.5-beta.1",
             "resolved": "https://registry.npmjs.org/codemirror-lang-perl/-/codemirror-lang-perl-0.1.5-beta.1.tgz",
@@ -2412,9 +2427,9 @@
             }
         },
         "@openwebwork/codemirror-lang-pg": {
-            "version": "0.0.1-beta.5",
-            "resolved": "https://registry.npmjs.org/@openwebwork/codemirror-lang-pg/-/codemirror-lang-pg-0.0.1-beta.5.tgz",
-            "integrity": "sha512-7TAI1h/V9+2pwhM/AJtj5HZyDHDqN4ly1dEiW1klaXbv4AX0aYQr8aCU9PYrUOEUJnWH7JKWgh26ft/Ti+r71g==",
+            "version": "0.0.1-beta.7",
+            "resolved": "https://registry.npmjs.org/@openwebwork/codemirror-lang-pg/-/codemirror-lang-pg-0.0.1-beta.7.tgz",
+            "integrity": "sha512-DdUXwYnGx34qXI2apTA3J7kmfcAHdEJcf0T0AwNeGZ+VdV9OmmDc89rGL1FN07V0n31RN1J1g8DEmYOb6QQFpA==",
             "requires": {
                 "@codemirror/language": "^6.10.2",
                 "@lezer/highlight": "^1.2.1",
@@ -2422,14 +2437,14 @@
             }
         },
         "@openwebwork/pg-codemirror-editor": {
-            "version": "0.0.1-beta.7",
-            "resolved": "https://registry.npmjs.org/@openwebwork/pg-codemirror-editor/-/pg-codemirror-editor-0.0.1-beta.7.tgz",
-            "integrity": "sha512-ILrr+/8hX0HYLvfg6LD1sOJt44073Wofus187K39p6RWBArXGvZ2GQvHCwReVxj+z0CzHnbJ4lKFyVF+UEY+SA==",
+            "version": "0.0.1-beta.13",
+            "resolved": "https://registry.npmjs.org/@openwebwork/pg-codemirror-editor/-/pg-codemirror-editor-0.0.1-beta.13.tgz",
+            "integrity": "sha512-AdNLmHaZsoIp+MDHIdguWTIBmqddOyDma/q0OXb6SQe49feY3DRBIOm7Fy75rv/KbChm9m9TOuQ0y9nUDXpLsw==",
             "requires": {
                 "@codemirror/lang-html": "^6.4.9",
                 "@codemirror/lang-xml": "^6.1.0",
                 "@codemirror/theme-one-dark": "^6.1.2",
-                "@openwebwork/codemirror-lang-pg": "^0.0.1-beta.5",
+                "@openwebwork/codemirror-lang-pg": "^0.0.1-beta.7",
                 "@replit/codemirror-emacs": "^6.1.0",
                 "@replit/codemirror-vim": "^6.2.1",
                 "cm6-theme-basic-dark": "^0.2.0",
@@ -2441,6 +2456,7 @@
                 "cm6-theme-solarized-dark": "^0.2.0",
                 "cm6-theme-solarized-light": "^0.2.0",
                 "codemirror": "^6.0.1",
+                "codemirror-lang-mt": "^0.0.2-beta.1",
                 "codemirror-lang-perl": "^0.1.5-beta.1",
                 "thememirror": "^2.0.1"
             }
@@ -2666,6 +2682,19 @@
                 "@codemirror/view": "^6.0.0"
             }
         },
+        "codemirror-lang-mt": {
+            "version": "0.0.2-beta.1",
+            "resolved": "https://registry.npmjs.org/codemirror-lang-mt/-/codemirror-lang-mt-0.0.2-beta.1.tgz",
+            "integrity": "sha512-KfWdRQJmeeAiXrU72JHDwwFkZkWaO0yHmhXurdJhVYrRNc/TAOlDHOulA9lQBkritcoFoo2UyyybuoE2FWHtFw==",
+            "requires": {
+                "@codemirror/lang-css": "^6.3.0",
+                "@codemirror/lang-html": "^6.4.9",
+                "@codemirror/lang-javascript": "^6.2.2",
+                "@codemirror/language": "^6.10.2",
+                "@lezer/highlight": "^1.2.1",
+                "@lezer/lr": "^1.4.2"
+            }
+        },
         "codemirror-lang-perl": {
             "version": "0.1.5-beta.1",
             "resolved": "https://registry.npmjs.org/codemirror-lang-perl/-/codemirror-lang-perl-0.1.5-beta.1.tgz",
diff --git a/htdocs/package.json b/htdocs/package.json
index bdbc7bfb86..beafd98430 100644
--- a/htdocs/package.json
+++ b/htdocs/package.json
@@ -14,7 +14,7 @@
     },
     "dependencies": {
         "@fortawesome/fontawesome-free": "^6.5.2",
-        "@openwebwork/pg-codemirror-editor": "^0.0.1-beta.7",
+        "@openwebwork/pg-codemirror-editor": "^0.0.1-beta.13",
         "bootstrap": "~5.3.3",
         "flatpickr": "^4.6.13",
         "iframe-resizer": "^4.3.11",
diff --git a/templates/ContentGenerator/Instructor/AchievementNotificationEditor.html.ep b/templates/ContentGenerator/Instructor/AchievementNotificationEditor.html.ep
index 4a26f76c8f..e759725636 100644
--- a/templates/ContentGenerator/Instructor/AchievementNotificationEditor.html.ep
+++ b/templates/ContentGenerator/Instructor/AchievementNotificationEditor.html.ep
@@ -23,8 +23,7 @@
 	% }
 	%
 	<div class="mb-2">
-	% # FIXME: This should not be using perl. Mojolicious templates have embedded perl, but are not perl.
-    <%= generate_codemirror_html($c, 'achievementNotification', $achievementNotification, 'perl') =%></div>
+    <%= generate_codemirror_html($c, 'achievementNotification', $achievementNotification, 'mt-text') =%></div>
 	%
 	% # Output action forms
 	% my $default_choice;