diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 3ca3f8b3c..384aab0a5 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -52,6 +52,7 @@ The <action> type attribute can be add,update,fix,remove.
     <action                   type="update" dev="ggregory" due-to="Dependabot">Update spotbugs-maven-plugin from 4.0.0 to 4.0.4 #593.</action>
     <action                   type="update" dev="ggregory" due-to="Dependabot">Update biz.aQute.bndlib from 5.1.1 to 5.1.2 #592.</action>
     <action                   type="update" dev="ggregory" due-to="Dependabot">Update junit-pioneer from 0.6.0 to 0.7.0 #589.</action>
+    <action issue="LANG-1579" type="update" dev="aherbert" due-to="XenoAmess">Improve stripAccents conversion of remaining accents.</action>
   </release>
   <release version="3.11" date="2020-07-12" description="New features and bug fixes.">
     <action                   type="update" dev="chtompki" due-to="Jin Xu">Refine test output for FastDateParserTest</action>
diff --git a/src/main/java/org/apache/commons/lang3/StringUtils.java b/src/main/java/org/apache/commons/lang3/StringUtils.java
index 0cb10e675..a93d34a7f 100644
--- a/src/main/java/org/apache/commons/lang3/StringUtils.java
+++ b/src/main/java/org/apache/commons/lang3/StringUtils.java
@@ -1382,11 +1382,9 @@ public static boolean containsWhitespace(final CharSequence seq) {
     private static void convertRemainingAccentCharacters(final StringBuilder decomposed) {
         for (int i = 0; i < decomposed.length(); i++) {
             if (decomposed.charAt(i) == '\u0141') {
-                decomposed.deleteCharAt(i);
-                decomposed.insert(i, 'L');
+                decomposed.setCharAt(i, 'L');
             } else if (decomposed.charAt(i) == '\u0142') {
-                decomposed.deleteCharAt(i);
-                decomposed.insert(i, 'l');
+                decomposed.setCharAt(i, 'l');
             }
         }
     }