diff --git a/build.gradle.kts b/build.gradle.kts
index a561515..bcad0ce 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,7 +2,7 @@ object Constants {
     const val VERSION = "0.4.2"
 
     const val VERSION_JAVA = 21
-    const val VERSION_MINECRAFT = "1.21.4-rc2"
+    const val VERSION_MINECRAFT = "1.21.4-rc3"
 }
 
 plugins {
@@ -71,7 +71,7 @@ tasks.withType<ProcessResources> {
     val data = mapOf(
         "version" to Constants.VERSION,
         "version_java" to Constants.VERSION_JAVA,
-        "version_minecraft" to "1.21.4-rc.2",
+        "version_minecraft" to "1.21.4-rc.3",
     )
 
     inputs.properties(data)