diff --git a/common/build.gradle b/common/build.gradle
index 7efbbeb..c6e40fe 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -6,7 +6,7 @@ plugins {
 legacyForge {
     mcpVersion = minecraft_version
     if (file("src/main/resources/META-INF/accesstransformer.cfg").exists()) {
-        accessWideners(file("src/main/resources/META-INF/accesstransformer.cfg"))
+        accessTransformers = ["src/main/resources/META-INF/accesstransformer.cfg"]
     }
 }
 
@@ -29,4 +29,4 @@ configurations {
 artifacts {
     commonJava sourceSets.main.java.sourceDirectories.singleFile
     commonResources sourceSets.main.resources.sourceDirectories.singleFile
-}
\ No newline at end of file
+}
diff --git a/forge/build.gradle b/forge/build.gradle
index a4b06f2..ea90264 100644
--- a/forge/build.gradle
+++ b/forge/build.gradle
@@ -17,7 +17,7 @@ legacyForge {
 
     def at = project(':common').file('src/main/resources/META-INF/accesstransformer.cfg')
     if (at.exists()) {
-        accessWideners(at)
+        accessTransformers = ["src/main/resources/META-INF/accesstransformer.cfg"]
     }
     runs {
         client {
@@ -50,4 +50,4 @@ jar {
     manifest.attributes([
             "MixinConfigs": "${mod_id}.mixins.json,${mod_id}.forge.mixins.json"
     ])
-}
\ No newline at end of file
+}