diff --git a/build.gradle b/build.gradle
index 0a206e0a..19cccefc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,8 +3,8 @@ plugins {
 	id 'maven-publish'
 }
 
-sourceCompatibility = JavaVersion.VERSION_16
-targetCompatibility = JavaVersion.VERSION_16
+sourceCompatibility = JavaVersion.VERSION_17
+targetCompatibility = JavaVersion.VERSION_17
 
 archivesBaseName = project.archives_base_name
 version = project.minecraft_version+'-'+project.mod_version+'+v'+new Date().format('yyMMdd')
@@ -44,8 +44,8 @@ tasks.withType(JavaCompile).configureEach {
 	// If Javadoc is generated, this must be specified in that task too.
 	it.options.encoding = "UTF-8"
 
-	// Minecraft 1.17 (21w19a) upwards uses Java 16.
-	it.options.release = 16
+	// Minecraft 1.18 upwards uses Java 17.
+	it.options.release = 17
 }
 
 java {