diff --git a/CHANGELOG.md b/CHANGELOG.md
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+# Change log
+
+## 4.2.1
+### New Features
+#### All Editors
+* Ability to set dash type for shapes
+* Redesigned embedded viewers
+* Better support of HiDPI systems
+* Update bootstrap to 3.3.7
+
+#### Document Editor
+* Ability to open and edit Footnotes
+* Ability to insert number of pages in document
+* Redone Version History. Ability to hide minor features.
+
+#### Spreadsheet Editor
+* Add ability to insert Equations in Spreadsheet Editor
+* Ability to open and edit Sparklines
+* Add new formula `SUMIFS`
+* Ability to select data from drop-down menu in context menu
+* Add multiselect support
+* Add rotation of 3D Charts
+* Update and improve visual styles for all chart types
+* Bring back `Freeze Panes` in `View Settings` menu
+* New algorithm for calculating cell height
+
+#### Presentation Editor
+* Add ability to insert Equations in Presentation Editor
+
+### Fixes
+#### Document Editor
+* Fix broken `Insert number of page` button
+* Fix problem with duplicate of last hieroglyph
+* Fix problem with changing chart type from 2D to 3D
+
+#### Spreadsheet Editor
+* Fix problem with empty cell while changing sparklines
+
+#### x2t
+* Improve compatibility with `doc` format
diff --git a/core b/core
index f84ee9a..13d5736 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit f84ee9a5a30b79a2995a96f8019978d0d9d130af
+Subproject commit 13d57361e4db28309a28cceb05b3267b4014a222
diff --git a/desktop-apps b/desktop-apps
index 17a2f00..fa0303b 160000
--- a/desktop-apps
+++ b/desktop-apps
@@ -1 +1 @@
-Subproject commit 17a2f0095c8059eef13048c661e3b9beff85a2ae
+Subproject commit fa0303b667acbcf519f2b8a3f2ab13407c16c42b
diff --git a/desktop-sdk b/desktop-sdk
index f1c8e3b..1d5ea86 160000
--- a/desktop-sdk
+++ b/desktop-sdk
@@ -1 +1 @@
-Subproject commit f1c8e3be07c88ed7ce81c4c9c900e454e9c3a197
+Subproject commit 1d5ea8684503e6536238b052afbc0b1eb2d2d5a2
diff --git a/dictionaries b/dictionaries
index 5d16d75..474a6c6 160000
--- a/dictionaries
+++ b/dictionaries
@@ -1 +1 @@
-Subproject commit 5d16d75f1cbb9e25e7bd9ab4ad21132ffaff682f
+Subproject commit 474a6c687d3e909004514ce593058a47e667e764
diff --git a/sdkjs b/sdkjs
index a161386..e31de79 160000
--- a/sdkjs
+++ b/sdkjs
@@ -1 +1 @@
-Subproject commit a161386857a2c2c33ef2cb61dbf95a96552ac811
+Subproject commit e31de797da58533cd7eabea5d1dcb473554581c5
diff --git a/web-apps b/web-apps
index c083753..24ce4d9 160000
--- a/web-apps
+++ b/web-apps
@@ -1 +1 @@
-Subproject commit c083753f7807565b39a8932766933cba6fb79832
+Subproject commit 24ce4d9b3a134a513607c8f86520eb88abae398c