diff --git a/Doxyfile b/Doxyfile
index ff5cee5..0d9e8e8 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "Arduino List Library"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2.1.0
+PROJECT_NUMBER         = 2.1.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/library.properties b/library.properties
index a5f24cc..02cc6a0 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=List
-version=2.1.0
+version=2.1.1
 author=Niklas Kaaf <nkaaf@protonmail.com>
 maintainer=Niklas Kaaf <nkaaf@protonmail.com>
 sentence=The Ultimate Collection of Lists