diff --git a/gradle.properties b/gradle.properties
index 014a4cd40..f650ad74f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -14,7 +14,7 @@ kotlin.code.style=official
 ideaVersion = 2021.2
 ideaVersionName = 2021.2
 
-coreVersion = 1.5.20
+coreVersion = 1.5.21
 downloadIdeaSources = true
 
 pluginTomlVersion = 0.2.151.3997-212
diff --git a/readme.md b/readme.md
index 6831b2fb1..cc0903120 100644
--- a/readme.md
+++ b/readme.md
@@ -40,7 +40,7 @@ Minecraft Development for IntelliJ
     </tr>
 </table>
 
-Info and Documentation [![Current Release](https://img.shields.io/badge/release-1.5.20-orange.svg?style=flat-square)](https://plugins.jetbrains.com/plugin/8327)
+Info and Documentation [![Current Release](https://img.shields.io/badge/release-1.5.21-orange.svg?style=flat-square)](https://plugins.jetbrains.com/plugin/8327)
 ----------------------
 
 <a href="https://discord.gg/j6UNcfr"><img src="https://i.imgur.com/JXu9C1G.png" height="48px"></img></a>