diff --git a/changelog.txt b/changelog.txt
index 0034bfa..a417c91 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -10,6 +10,7 @@ Date: 07.5.2022
     - buffed carbon and sulfur driven oil processing
     - increased yield of rich powder processing and made it faster
     - increased conversion rate of sulfuric acid -> hydrosulfuric
+    - set minimum working temperature for thermochemical seperator to 500 dec
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 Version: 1.0.19
 Date: 05.5.2022