diff --git a/README.md b/README.md
index a8c314b..6bbdd8e 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,13 @@ Available worlds will be converted to 'lsqlite3', but there is no way back, so:
 
 ### History
 
+**2020-08-08  V0.21**
+- Pull request #18: Add a simple Digtron battery (from Thomas-S)
+- Pull request #23: Lua Controller: Fix $item_description() documentation and translation (from Thomas-S)
+- Pull request #24: Distributor: improve fairness by using random spread (from realmicu)
+- Bugfix: TA1 meridian hammer did not glow (from realmicu)
+- Bugfix: power.power_available() did not check the network state
+
 **2020-07-31  V0.20**
 - Pull request #21: Lua Controller: Allow to get itemstring and description of 8x2000 chest contents (from Thomas-S)
 - Pull request #22: Trowel: Prevent hidden nodes from being dug (from Thomas-S)
diff --git a/init.lua b/init.lua
index af2e576..ef8b2a1 100644
--- a/init.lua
+++ b/init.lua
@@ -13,7 +13,7 @@
 techage = {}
 
 -- Version for compatibility checks, see readme.md/history
-techage.version = 0.20
+techage.version = 0.21
 
 if minetest.global_exists("tubelib") then
 	minetest.log("error", "[techage] Techage can't be used together with the mod tubelib!")