diff --git a/build.gradle b/build.gradle
index bbdca7e..790e093 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 
 buildscript {
     repositories {
-        jcenter()
+        gradlePluginPortal()
         maven {url = "http://files.minecraftforge.net/maven"}
     }
     dependencies {
@@ -12,7 +12,7 @@ buildscript {
 apply plugin: 'com.github.johnrengelman.shadow'
 apply plugin: 'java'
 
-version = "2.5"
+version = "2.5.1"
 group = "ofdev" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "aa_do_not_rename_OptiFineDevTweaker"
 
@@ -22,11 +22,11 @@ compileJava {
 }
 
 repositories {
+    maven { url = 'https://files.minecraftforge.net/maven' }
+    mavenCentral()
     maven {
         url "https://libraries.minecraft.net/"
     }
-    maven { url = 'https://files.minecraftforge.net/maven' }
-    mavenCentral()
 }
 
 configurations {
@@ -37,7 +37,7 @@ dependencies {
     shadow("org.ow2.asm:asm-debug-all:5.2")
     compileOnly 'cpw.mods:modlauncher:4.0.+'
     compileOnly('net.minecraft:launchwrapper:1.12') {
-        transitive = false
+        transitive = true
     }
 }
 
@@ -78,6 +78,7 @@ task shadowJarAll(type: ShadowJar) {
     dependsOn(shadowJarLW)
     from(sourceSets.main.output) {
         include('ofdev/modlauncher/**')
+        include('META-INF/**')
     }
     from(shadowJarLW.archivePath.absolutePath) {
         include('*')
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/ofdev/launchwrapper/OptifineDevRemapper.java b/src/main/java/ofdev/launchwrapper/OptifineDevRemapper.java
index 5b9a428..bafc284 100644
--- a/src/main/java/ofdev/launchwrapper/OptifineDevRemapper.java
+++ b/src/main/java/ofdev/launchwrapper/OptifineDevRemapper.java
@@ -22,8 +22,6 @@
 import java.util.Map;
 import java.util.Set;
 
-import javax.annotation.Nullable;
-
 // this class is a modified version of FMLDeobfuscatingRemapper
 public class OptifineDevRemapper extends Remapper {
 
@@ -132,7 +130,6 @@ private void parseField(String[] parts) {
     private Set<String> negativeCacheMethods = new HashSet<>();
     private Set<String> negativeCacheFields = new HashSet<>();
 
-    @Nullable
     private String getFieldType(String owner, String name) {
         if (fieldDescriptions.containsKey(owner)) {
             return fieldDescriptions.get(owner).get(name);
@@ -204,11 +201,11 @@ private void storeMemberFieldMapping(String owner, String name, String desc, Str
     }
 
     @Override
-    public String mapFieldName(String owner, String name, @Nullable String desc) {
+    public String mapFieldName(String owner, String name, String desc) {
         return mapFieldName(owner, name, desc, false);
     }
 
-    String mapFieldName(String owner, String name, @Nullable String desc, boolean raw) {
+    String mapFieldName(String owner, String name, String desc, boolean raw) {
         if (classNameMap == null || classNameMap.isEmpty()) {
             return name;
         }
@@ -259,7 +256,6 @@ public String mapMethodName(String owner, String name, String desc) {
     }
 
     @Override
-    @Nullable
     public String mapSignature(String signature, boolean typeSignature) {
         // JDT decorates some lambdas with this and SignatureReader chokes on it
         if (signature != null && signature.contains("!*")) {
@@ -323,7 +319,7 @@ private void findAndMergeSuperMaps(String name) {
         }
     }
 
-    public void mergeSuperMaps(String name, @Nullable String superName, String[] interfaces) {
+    public void mergeSuperMaps(String name, String superName, String[] interfaces) {
         //        System.out.printf("Computing super maps for %s: %s %s\n", name, superName, Arrays.asList(interfaces));
         if (classNameMap == null || classNameMap.isEmpty()) {
             return;
@@ -376,7 +372,6 @@ public String notchFromMcpOrDefault(String className) {
         return classNameMapInverse.getOrDefault(className, className);
     }
 
-    @Nullable
     public String getStaticFieldType(String oldType, String oldName, String newType, String newName) {
         String fType = getFieldType(newType, newName);
         if (oldType.equals(newType)) {
diff --git a/src/main/java/ofdev/modlauncher/OFDevRetransformer.java b/src/main/java/ofdev/modlauncher/OFDevRetransformer.java
index 9286fb2..681f26c 100644
--- a/src/main/java/ofdev/modlauncher/OFDevRetransformer.java
+++ b/src/main/java/ofdev/modlauncher/OFDevRetransformer.java
@@ -29,8 +29,6 @@
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import javax.annotation.Nonnull;
-
 public class OFDevRetransformer implements ITransformer<ClassNode> {
 
     private static final Logger LOGGER = LogManager.getLogger();
@@ -85,7 +83,7 @@ private static Collection<? extends Target> findOptiFineClasses(IEnvironment env
         return newTargets;
     }
 
-    @Nonnull @Override public ClassNode transform(ClassNode input, ITransformerVotingContext context) {
+    @Override public ClassNode transform(ClassNode input, ITransformerVotingContext context) {
         ClassNode output = new ClassNode();
         ClassRemapper classRemapper = new ClassRemapper(output, remapper);
         input.accept(classRemapper);
@@ -99,11 +97,11 @@ private static Collection<? extends Target> findOptiFineClasses(IEnvironment env
         return output;
     }
 
-    @Nonnull @Override public TransformerVoteResult castVote(ITransformerVotingContext context) {
+    @Override public TransformerVoteResult castVote(ITransformerVotingContext context) {
         return TransformerVoteResult.YES;
     }
 
-    @Nonnull @Override public Set<Target> targets() {
+    @Override public Set<Target> targets() {
         return targets;
     }
 
diff --git a/src/main/java/ofdev/modlauncher/OFDevTransformationService.java b/src/main/java/ofdev/modlauncher/OFDevTransformationService.java
index a0f3c10..6b717e5 100644
--- a/src/main/java/ofdev/modlauncher/OFDevTransformationService.java
+++ b/src/main/java/ofdev/modlauncher/OFDevTransformationService.java
@@ -48,8 +48,6 @@
 import java.util.function.BiFunction;
 import java.util.zip.ZipFile;
 
-import javax.annotation.Nonnull;
-
 public class OFDevTransformationService implements ITransformationService {
 
     private static final Logger LOGGER = LogManager.getLogger();
@@ -76,7 +74,7 @@ private static Path findObfMcJar(IEnvironment env) {
     private static IEnvironment env;
     private static BiConsumer<ClassNode, ClassNode> fixMemberAccess;
 
-    @Nonnull @Override public String name() {
+    @Override public String name() {
         return "OptiFineDevTransformationService";
     }
 
@@ -208,7 +206,7 @@ public static ClassNode wrapOptiFineTransform(ClassNode transformed, ClassNode o
         return output;
     }
 
-    @Nonnull @Override public List<ITransformer> transformers() {
+    @Override public List<ITransformer> transformers() {
         return Collections.singletonList(new OFDevRetransformer(env));
     }