diff --git a/.gitignore b/.gitignore
index aa724b7..478f543 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,8 @@
 .externalNativeBuild
 .cxx
 local.properties
+
+# Keystore files
+*.keystore
+*.jks
+debug.keystore
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index 20e2a01..051013a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -6,7 +6,7 @@
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+org.gradle.jvmargs=-Xmx4096m -Xms1024m -XX:MaxMetaspaceSize=512m -XX:+UseG1GC -XX:+UseStringDeduplication -Dfile.encoding=UTF-8
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. For more details, visit
 # https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
diff --git a/lib/src/main/java/com/circle/modularwallets/core/chains/ArcTestnet.kt b/lib/src/main/java/com/circle/modularwallets/core/chains/ArcTestnet.kt
new file mode 100644
index 0000000..10b6442
--- /dev/null
+++ b/lib/src/main/java/com/circle/modularwallets/core/chains/ArcTestnet.kt
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2025 Circle Internet Group, Inc. All rights reserved.
+ *  
+ * SPDX-License-Identifier: Apache-2.0.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at.
+ *
+ * Http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.circle.modularwallets.core.chains
+
+object ArcTestnet : Chain() {
+    override val chainId: Long
+        get() = 5042002L
+}
+
diff --git a/lib/src/main/java/com/circle/modularwallets/core/constants/AbiConstants.kt b/lib/src/main/java/com/circle/modularwallets/core/constants/AbiConstants.kt
index 916b0ee..720abb1 100644
--- a/lib/src/main/java/com/circle/modularwallets/core/constants/AbiConstants.kt
+++ b/lib/src/main/java/com/circle/modularwallets/core/constants/AbiConstants.kt
@@ -27,6 +27,7 @@ internal val CONTRACT_ADDRESS: Map<String, String> = mapOf(
     Token.Arbitrum_USDC.name to "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
     Token.Arbitrum_ARB.name to "0x912CE59144191C1204E64559FE8253a0e49E6548",
     Token.ArbitrumSepolia_USDC.name to "0x75faf114eafb1BDbe2F0316DF893fd58CE46AA4d",
+    Token.ArcTestnet_USDC.name to "0x3600000000000000000000000000000000000000",
     Token.Avalanche_USDC.name to "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
     Token.AvalancheFuji_USDC.name to "0x5425890298aed601595a70AB815c96711a31Bc65",
     Token.Base_USDC.name to "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
diff --git a/lib/src/main/java/com/circle/modularwallets/core/models/Token.kt b/lib/src/main/java/com/circle/modularwallets/core/models/Token.kt
index 4669659..ba94306 100644
--- a/lib/src/main/java/com/circle/modularwallets/core/models/Token.kt
+++ b/lib/src/main/java/com/circle/modularwallets/core/models/Token.kt
@@ -27,6 +27,7 @@ enum class Token {
     Arbitrum_USDC,
     Arbitrum_ARB,
     ArbitrumSepolia_USDC,
+    ArcTestnet_USDC,
     Avalanche_USDC,
     AvalancheFuji_USDC,
     Base_USDC,