diff --git a/build.gradle b/build.gradle
index 852f028..021dada 100644
--- a/build.gradle
+++ b/build.gradle
@@ -44,8 +44,8 @@ dependencies {
 	//to change the versions see the gradle.properties file
 	minecraft "com.mojang:minecraft:${project.minecraft_version}"
 
-	mappings loom.fromCommit('minecraft-cursed-legacy/Plasma', 'e84b183') {spec ->
-		spec.version = 'b1.7.3-17'
+	mappings loom.fromCommit('minecraft-cursed-legacy/Plasma', "build.${project.plasma_build}") {spec ->
+		spec.version = "b1.7.3-${project.plasma_build}"
 	}
 
 	modImplementation("com.github.minecraft-cursed-legacy:cursed-fabric-loader:${project.loader_version}") {
diff --git a/gradle.properties b/gradle.properties
index 93d5ffb..0b8811e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,6 +4,7 @@ org.gradle.jvmargs=-Xmx1G
 # Fabric Properties
 	minecraft_version=b1.7.3
 	loader_version=5ce86c8
+	plasma_build=18
 # is actually 1.0.6, but we stuffed up the maven build, so 1.0.6.1 should fix that
 	api_version=1.0.6.1