diff --git a/common/build.gradle b/common/build.gradle
index 66bbedfe..05a6a492 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -11,9 +11,9 @@ dependencies {
 		exclude group: "dev.architectury"
 	}
 
- 	modCompileOnly("mezz.jei:jei-${minecraft_version}-common-api:${jei_version}")
+ 	modCompileOnly("mezz.jei:jei-1.21-common-api:${jei_version}")
 
-	modCompileOnly "dev.emi:emi-xplat-intermediary:${emi_version}+${minecraft_version}:api"
+	modCompileOnly "dev.emi:emi-xplat-intermediary:${emi_version}+1.21:api"
 }
 
 test {
diff --git a/fabric/build.gradle b/fabric/build.gradle
index 36403477..59ddeb83 100644
--- a/fabric/build.gradle
+++ b/fabric/build.gradle
@@ -30,7 +30,7 @@ dependencies {
 
 	modApi "dev.architectury:architectury-fabric:${rootProject.architectury_version}"
 
-	modCompileOnlyApi("mezz.jei:jei-${minecraft_version}-fabric-api:${jei_version}")
+	modCompileOnlyApi("mezz.jei:jei-1.21-fabric-api:${jei_version}")
 
 	common(project(path: ":common", configuration: "dev")) { transitive false }
 	shadowCommon(project(path: ":common", configuration: "transformProductionFabric")) { transitive false }
diff --git a/gradle.properties b/gradle.properties
index 9dc4a8f0..401e03ef 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -12,12 +12,12 @@ archives_base_name=ftb-library
 maven_group=dev.ftb.mods
 
 # MC
-minecraft_version=1.21
+minecraft_version=1.21.1
 
 # Deps
 forge_version=49.0.31
-neoforge_version=21.0.163
-neoforge_version_range=[21.0.143,)
+neoforge_version=21.1.9
+neoforge_version_range=[21.1.0,)
 neoforge_loader_version=4
 fabric_loader_version=0.15.11
 fabric_api_version=0.101.2+1.21
diff --git a/neoforge/build.gradle b/neoforge/build.gradle
index 88ec610a..51814281 100644
--- a/neoforge/build.gradle
+++ b/neoforge/build.gradle
@@ -36,7 +36,7 @@ dependencies {
 	modApi "dev.architectury:architectury-neoforge:${rootProject.architectury_version}"
 
 	modCompileOnly "me.shedaniel:RoughlyEnoughItems-neoforge:${rootProject.rei_version}"
-	modCompileOnly("mezz.jei:jei-${minecraft_version}-neoforge-api:${jei_version}")
+	modCompileOnly("mezz.jei:jei-1.21-neoforge-api:${jei_version}")
 
 	common(project(path: ":common", configuration: "dev")) { transitive false }
 	shadowCommon(project(path: ":common", configuration: "transformProductionNeoForge")) { transitive false }