diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53dabb3..d87716a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ Removed, Fixed, Security, and others; and this project adheres to [Semantic Vers
 
 ## [Unreleased]
 
+## [0.4.1] - 2021-10-21
+### Fixed
+- xlsx_drone core library (C) was updated from 0.2.0 to 0.2.2 fixing a few problems. Mirroring those changes here through updating the dlls.
+
 ## [0.4.0] - 2021-01-16
 ### Added
 - Method Sheet#last_column().
diff --git a/ext/xlsx_drone_x64.dll b/ext/xlsx_drone_x64.dll
index 3351d35..41a98e5 100644
Binary files a/ext/xlsx_drone_x64.dll and b/ext/xlsx_drone_x64.dll differ
diff --git a/ext/xlsx_drone_x86.dll b/ext/xlsx_drone_x86.dll
index 63f0538..8908563 100644
Binary files a/ext/xlsx_drone_x86.dll and b/ext/xlsx_drone_x86.dll differ
diff --git a/xlsx_drone.gemspec b/xlsx_drone.gemspec
index ed7f4d3..116fb7c 100644
--- a/xlsx_drone.gemspec
+++ b/xlsx_drone.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name = "xlsx_drone"
-  s.version = "0.4.0"
+  s.version = "0.4.1"
   s.summary = "Fast Microsoft Excel's XLSX reader. Binding of C's xlsx_drone lib."
   s.author = "Damián M. González"
   s.homepage = "https://github.com/damian-m-g/xlsx_drone_rb"