diff --git a/build.gradle b/build.gradle
index 5c0a54d..b9f39be 100644
--- a/build.gradle
+++ b/build.gradle
@@ -34,8 +34,8 @@ dependencies {
 	implementation ('org.zeroturnaround:zt-zip:1.13')
 	implementation ('com.google.code.gson:gson:2.8.5')
 	implementation ('com.google.guava:guava:27.0.1-jre')
-	implementation ('net.fabricmc:stitch:0.1.0.28')
-	implementation ('net.fabricmc:tiny-remapper:0.1.0.20') {
+	implementation ('net.fabricmc:stitch:0.1.0.29')
+	implementation ('net.fabricmc:tiny-remapper:0.1.0.22') {
 		transitive = false
 	}
 //	implementation ('org.benf:cfr:0.136')
diff --git a/src/main/java/net/fabricmc/loom/util/MapJarsTiny.java b/src/main/java/net/fabricmc/loom/util/MapJarsTiny.java
index 6660f70..5a15625 100644
--- a/src/main/java/net/fabricmc/loom/util/MapJarsTiny.java
+++ b/src/main/java/net/fabricmc/loom/util/MapJarsTiny.java
@@ -63,6 +63,7 @@ public class MapJarsTiny {
 
 			TinyRemapper remapper = TinyRemapper.newRemapper()
 					.withMappings(TinyUtils.createTinyMappingProvider(mappings, fromM, toM))
+					.renameInvalidLocals(true)
 					.rebuildSourceFilenames(true)
 					.build();