diff --git a/lib/editor/atto/plugins/html/thirdpartylibs.xml b/lib/editor/atto/plugins/html/thirdpartylibs.xml
index 52809d74461..7227442da60 100644
--- a/lib/editor/atto/plugins/html/thirdpartylibs.xml
+++ b/lib/editor/atto/plugins/html/thirdpartylibs.xml
@@ -4,7 +4,7 @@
     <location>yui/src/codemirror</location>
     <name>codemirror</name>
     <license>MIT</license>
-    <version>5.59.4</version>
+    <version>5.65.0</version>
     <licenseversion></licenseversion>
   </library>
   <library>
diff --git a/lib/editor/atto/plugins/html/yui/src/codemirror/readme_moodle.txt b/lib/editor/atto/plugins/html/yui/src/codemirror/readme_moodle.txt
index 3bfc5274a84..a9a720088c2 100644
--- a/lib/editor/atto/plugins/html/yui/src/codemirror/readme_moodle.txt
+++ b/lib/editor/atto/plugins/html/yui/src/codemirror/readme_moodle.txt
@@ -1,6 +1,6 @@
 Description of importing the codemirror library into Moodle.
 
-NOTE 2: To make it more readable, in this explanation [LIBRARYPATH] means:
+NOTE: To make it more readable, in this explanation [LIBRARYPATH] means:
     [PATH TO YOUR MOODLE]/lib/editor/atto/plugins/html/yui/src/codemirror
 
 1 Download the latest codemirror code somewhere (example /tmp/cm) using: npm install codemirror
@@ -14,11 +14,9 @@ cp node_modules/codemirror/mode/htmlmixed/htmlmixed.js [LIBRARYPATH]/js
 cp node_modules/codemirror/mode/javascript/javascript.js [LIBRARYPATH]/js
 cp node_modules/codemirror/mode/xml/xml.js [LIBRARYPATH]/js
 
-3 Update the verison number in:
-    [PATH TO YOUR MOODLE]/var/www/html/m/master2/lib/editor/atto/plugins/html/thirdpartylibs.xml
-
-3 rebuild the module by:
+3 Rebuild the module by:
     cd [PATH TO YOUR MOODLE]/lib/editor/atto/plugins/html/yui/src/
     grunt shifter
 
-
+4 Update the version number in (using the version noted down in #1):
+    [PATH TO YOUR MOODLE]/lib/editor/atto/plugins/html/thirdpartylibs.xml