diff --git a/build.gradle b/build.gradle
index d1ae164..054f5fc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -40,8 +40,7 @@ base {
     archivesName = mod_id + "-neoforge"
 }
 
-// Mojang ships Java 21 to end users starting in 1.20.5, so mods should target Java 21.
-java.toolchain.languageVersion = JavaLanguageVersion.of(21)
+java.toolchain.languageVersion = JavaLanguageVersion.of(17)
 
 runs {
     configureEach {