diff --git a/Changes.txt b/Changes.txt
index 0d8eab82..c78c0519 100644
--- a/Changes.txt
+++ b/Changes.txt
@@ -1,6 +1,13 @@
 /**
 @page changes Changes
 
+## 1.0.9 July 7 2021
+
+- Added support for Excel 365 dynamic arrays. See
+ `worksheet_write_dynamic_array_formula()` `worksheet_write_dynamic_formula()`
+ and @ref ww_formulas_dynamic_arrays.
+
+
 ## 1.0.8 July 3 2021
 
 - Fix for dynamic library soname on Linux.
diff --git a/include/xlsxwriter.h b/include/xlsxwriter.h
index fff2d594..cd1330f5 100644
--- a/include/xlsxwriter.h
+++ b/include/xlsxwriter.h
@@ -18,8 +18,8 @@
 #include "xlsxwriter/format.h"
 #include "xlsxwriter/utility.h"
 
-#define LXW_VERSION "1.0.8"
-#define LXW_VERSION_ID 108
-#define LXW_SOVERSION "2"
+#define LXW_VERSION "1.0.9"
+#define LXW_VERSION_ID 109
+#define LXW_SOVERSION "2.1"
 
 #endif /* __LXW_XLSXWRITER_H__ */
diff --git a/libxlsxwriter.podspec b/libxlsxwriter.podspec
index 744da566..34d7812e 100644
--- a/libxlsxwriter.podspec
+++ b/libxlsxwriter.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name                  = "libxlsxwriter"
-  s.version               = "1.0.8"
+  s.version               = "1.0.9"
   s.summary               = "Libxlsxwriter: A C library for creating Excel XLSX files."
   s.ios.deployment_target = "8.0"
   s.osx.deployment_target = "10.8"