diff --git a/.ottdrev-vc b/.ottdrev-vc
index e3a63fd547..e4a53aef88 100644
--- a/.ottdrev-vc
+++ b/.ottdrev-vc
@@ -1,2 +1,2 @@
-jgrpp-0.40.3	20210302	0	26dcd0734eb54b7962940eab8a86d37dae8f099f	1	1	2021
-959d8ef62373919d5b5b0effcf6c52c05dea85f21ff4bd108d09038b7329cd45  -
+jgrpp-0.40.4	20210307	0	b25cbc969cdafa8a961952ca914a391884937725	1	1	2021
+920229e9142d2f77bb9356ef65dcfcc7c00b1755a89f7671be0fafb93c103233  -
diff --git a/README.md b/README.md
index 78488c7671..9b5ba9dd87 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-## JGR's Patchpack version 0.40.3
+## JGR's Patchpack version 0.40.4
 
 This is a collection of patches applied to [OpenTTD](http://www.openttd.org/)
 
diff --git a/jgrpp-changelog.md b/jgrpp-changelog.md
index 5e823e8534..3aff193003 100644
--- a/jgrpp-changelog.md
+++ b/jgrpp-changelog.md
@@ -2,9 +2,19 @@
 
 * * *
 
+### v0.40.4 (2021-03-07)
+* Fix crash when removing/upgrading airport with hangar window open.
+* Fix compiling as a dedicated server.
+* Fix compiling with Allegro.
+* Add screenshot type: whole map at current zoom level.
+* Add empty hotkey for the industry chains window.
+* Allow following vehicles at all non-map zoom levels.
+* Add Korean translations by TELK.
+* Bump trunk base from commit c656633bea39d2002330eddee54522c8db542785 to commit f70aa8fabe5eabb39a62cc50a3a27ec1c2434ded.
+
 ### v0.40.3 (2021-03-02)
 * Fix crashes with trains with no valid orders when using the realistic braking model.
-* Fix trains with no orders no stopping at stations when using the realistic braking model.
+* Fix trains with no orders not stopping at stations when using the realistic braking model.
 * Fix trains passing signals when using both the original acceleration and original braking models.
 * Fix various issues with ship collision avoidance which could result in a group of ships being routed in a circle.
 * Fix for crash when exiting whilst NewGRF scan still in progress.