diff --git a/.builds/linux.yml b/.builds/linux.yml
index df4b5f6058..c9145ca56f 100644
--- a/.builds/linux.yml
+++ b/.builds/linux.yml
@@ -1,6 +1,6 @@
 image: debian/bookworm
 packages:
-  - openjdk-17-jdk-headless
+  - openjdk-21-jdk-headless
   - jq
 sources:
   - https://git.sr.ht/~williewillus/botania
diff --git a/Fabric/build.gradle b/Fabric/build.gradle
index 7d71c745d6..2736053fb8 100644
--- a/Fabric/build.gradle
+++ b/Fabric/build.gradle
@@ -99,20 +99,20 @@ dependencies {
     minecraft "com.mojang:minecraft:${minecraft_version}"
     mappings loom.layered() {
         officialMojangMappings()
-        parchment("org.parchmentmc.data:parchment-${minecraft_version}:${parchment_version}@zip")
+        parchment("org.parchmentmc.data:parchment-${parchment_version}@zip")
     }
 
-    modImplementation "net.fabricmc:fabric-loader:0.16.0"
-    modImplementation "net.fabricmc.fabric-api:fabric-api:0.97.0+${minecraft_version}"
+    modImplementation "net.fabricmc:fabric-loader:${fabric_version}"
+    modImplementation "net.fabricmc.fabric-api:fabric-api:${fabric_api_version}"
 
     compileOnly project(":Xplat")
 
-    modImplementation "vazkii.patchouli:Patchouli:${minecraft_version}-${patchouli_version}-FABRIC"
+    modImplementation "vazkii.patchouli:Patchouli:${patchouli_version}-FABRIC"
 
     modCompileOnly "me.shedaniel:RoughlyEnoughItems-fabric:${rei_version}"
 
-    modCompileOnly "dev.emi:emi-fabric:${emi_version}+${minecraft_version}:api"
-    modLocalRuntime "dev.emi:emi-fabric:${emi_version}+${minecraft_version}"
+    modCompileOnly "dev.emi:emi-fabric:${emi_version}:api"
+    modLocalRuntime "dev.emi:emi-fabric:${emi_version}"
 
     modImplementation "me.zeroeightsix:fiber:0.23.0-2"  
     include "me.zeroeightsix:fiber:0.23.0-2"
diff --git a/NeoForge/build.gradle b/NeoForge/build.gradle
index 3065b052fe..05fb3f85d5 100644
--- a/NeoForge/build.gradle
+++ b/NeoForge/build.gradle
@@ -34,8 +34,9 @@ repositories {
 
 subsystems {
     parchment {
-        minecraftVersion = "${minecraft_version}"
-        mappingsVersion = "${parchment_version}"
+        var parchment_components = parchment_version.split(":")
+        minecraftVersion = parchment_components[0]
+        mappingsVersion = parchment_components[1]
     }
 }
 
@@ -56,18 +57,18 @@ runs {
 }
 
 dependencies {
-    implementation "net.neoforged:neoforge:20.4.173"
+    implementation "net.neoforged:neoforge:${neoforge_version}"
     implementation project(":Xplat")
 
-    implementation "vazkii.patchouli:Patchouli:${minecraft_version}-${patchouli_version}-NEOFORGE"
+    implementation "vazkii.patchouli:Patchouli:${patchouli_version}-NEOFORGE"
     compileOnly "mezz.jei:jei-${minecraft_version}-common-api:${jei_version}"
-    runtimeOnly "mezz.jei:jei-${minecraft_version}-neoforge:${jei_version}"
+    // runtimeOnly "mezz.jei:jei-${minecraft_version}-neoforge:${jei_version}"
 
-    compileOnly "dev.emi:emi-neoforge:${emi_version}+${minecraft_version}:api"
-    //runtimeOnly "dev.emi:emi-neoforge:${emi_version}+${minecraft_version}"
+    compileOnly "dev.emi:emi-neoforge:${emi_version}:api"
+    runtimeOnly "dev.emi:emi-neoforge:${emi_version}"
 
-    compileOnly "top.theillusivec4.curios:curios-neoforge:${curios_version}+${minecraft_version}:api"
-    runtimeOnly "top.theillusivec4.curios:curios-neoforge:${curios_version}+${minecraft_version}"
+    compileOnly "top.theillusivec4.curios:curios-neoforge:${curios_version}:api"
+    runtimeOnly "top.theillusivec4.curios:curios-neoforge:${curios_version}"
 
     // compileOnly 'com.blamejared.crafttweaker:CraftTweaker-forge-1.18.2:9.1.123'
 
diff --git a/Xplat/build.gradle b/Xplat/build.gradle
index 03bfe9dc5f..099ada0c33 100644
--- a/Xplat/build.gradle
+++ b/Xplat/build.gradle
@@ -1,6 +1,9 @@
 plugins {
     id 'java'
-    id 'agency.highlysuspect.minivan'
+    // temporary until https://github.com/CrackedPolishedBlackstoneBricksMC/minivan/issues/2 is fixed
+    // id 'agency.highlysuspect.minivan'
+    // could probably have used NeoGradle but i had the code for ModDevGradle ready
+    id "net.neoforged.moddev"
 }
 
 archivesBaseName = "${mod_name}-xplat"
@@ -9,9 +12,19 @@ if (System.getenv().RELEASE_MODE == null) {
     version += '-SNAPSHOT'
 }
 
-minivan {
-    version(minecraft_version)
-    accessWideners 'src/main/resources/botania_xplat.accesswidener'
+// minivan {
+//     version(minecraft_version)
+//     accessWideners 'src/main/resources/botania_xplat.accesswidener'
+// }
+
+neoForge {
+    neoFormVersion = "1.21.1-20240808.144430"
+
+    parchment {
+        var parchment_components = parchment_version.split(":")
+        mappingsVersion = parchment_components[1]
+        minecraftVersion = parchment_components[0]
+    }
 }
 
 repositories {
@@ -35,7 +48,7 @@ repositories {
 dependencies {
     compileOnly "net.fabricmc:sponge-mixin:${mixin_version}"
     annotationProcessor("io.github.llamalad7:mixinextras-common:${mixinextras_version}")
-    compileOnly "vazkii.patchouli:Patchouli-xplat:${minecraft_version}-${patchouli_version}"
+    compileOnly "vazkii.patchouli:Patchouli-xplat:${patchouli_version}"
 
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.6.1'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.6.1'
@@ -45,7 +58,7 @@ dependencies {
     compileOnly "com.unascribed:ears-api:${ears_version}"
 
     compileOnly "mezz.jei:jei-${minecraft_version}-common-api:${jei_version}"
-    compileOnly "dev.emi:emi-xplat-mojmap:${emi_version}+${minecraft_version}:api"
+    compileOnly "dev.emi:emi-xplat-mojmap:${emi_version}:api"
 
     compileOnly "org.jetbrains:annotations:24.0.1"
 
diff --git a/build.gradle b/build.gradle
index 04101f4b34..e5c71d768c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ subprojects {
     apply plugin: 'pmd'
     apply plugin: "com.diffplug.spotless"
     apply plugin: 'maven-publish'
-    java.toolchain.languageVersion = JavaLanguageVersion.of(17)
+    java.toolchain.languageVersion = JavaLanguageVersion.of(21)
     java.withSourcesJar()
     archivesBaseName = "${mod_name}"
 
@@ -28,7 +28,7 @@ subprojects {
 
     tasks.withType(JavaCompile).configureEach {
         it.options.encoding = 'UTF-8'
-        it.options.release = 17
+        it.options.release = 21
     }
 
     tasks.withType(GenerateModuleMetadata).configureEach {
diff --git a/gradle.properties b/gradle.properties
index 48bef6dff2..7dafa13941 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -7,18 +7,24 @@ org.gradle.jvmargs=-Xmx3G \
   --add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED \
   --add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED
 
-minecraft_version=1.20.4
+minecraft_version=1.21.1
 build_number=447
 group=vazkii.botania
 mod_name=Botania
+
 mixin_version=0.15.0+mixin.0.8.7
 mixinextras_version=0.4.0
-patchouli_version=85
-jei_version=17.3.1.3
-emi_version=1.1.10
-rei_version=14.1.742
-trinkets_version=3.8.1
-curios_version=7.4.3
+patchouli_version=1.21-87
+jei_version=19.16.4.171
+emi_version=1.1.12+1.21
+rei_version=16.0.754
+trinkets_version=3.10.0
+curios_version=9.0.9+1.21
 ears_version=1.4.6
-cca_version=5.4.0
-parchment_version=2024.04.14
\ No newline at end of file
+cca_version=6.1.1
+parchment_version=1.21:2024.07.28
+
+neoforge_version=21.1.39
+
+fabric_version=0.16.4
+fabric_api_version=0.103.0+1.21.1
\ No newline at end of file
diff --git a/gradle/gradle-daemon-jvm.properties b/gradle/gradle-daemon-jvm.properties
index 858feb7e38..63e5bbdf48 100644
--- a/gradle/gradle-daemon-jvm.properties
+++ b/gradle/gradle-daemon-jvm.properties
@@ -1,2 +1,2 @@
 #This file is generated by updateDaemonJvm
-toolchainVersion=17
+toolchainVersion=21
diff --git a/settings.gradle b/settings.gradle
index b08450e7c2..9924f9400c 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,6 +1,7 @@
 pluginManagement {
     plugins {
         id 'net.neoforged.gradle.userdev' version '7.0.97' apply false
+        id "net.neoforged.moddev" version "0.1.126" apply false
         id 'org.spongepowered.mixin' version '0.8.7' apply false
         id 'agency.highlysuspect.minivan' version '0.5' apply false
         id 'fabric-loom' version '1.7.2' apply false