diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8bd751a4..dc44d849 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -41,14 +41,14 @@ jobs:
         CERTS_PASS: ${{ secrets.CERTS_PASS }}
         DECORD_KEY: ${{ secrets.DECORD_KEY }}
 
-#  xcode12_3:
-#    runs-on: macOS-latest
-#    steps:
-#    - uses: actions/checkout@v1
-#     - name: "Testing on Xcode 12.3"
-#      run: test/travis_ci.sh
-#      env:
-#        DEVELOPER_DIR: /Applications/Xcode_12.3.app
-#        CERTS_PASS: ${{ secrets.CERTS_PASS }}
-#        DECORD_KEY: ${{ secrets.DECORD_KEY }}
-#
+  xcode12_3:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: "Testing on Xcode 12.3"
+      run: test/travis_ci.sh
+      env:
+        DEVELOPER_DIR: /Applications/Xcode_12.3.app
+        CERTS_PASS: ${{ secrets.CERTS_PASS }}
+        DECORD_KEY: ${{ secrets.DECORD_KEY }}
+
diff --git a/sample/SampleApp.xcodeproj/project.pbxproj b/sample/SampleApp.xcodeproj/project.pbxproj
index 8e7e8997..5586a491 100644
--- a/sample/SampleApp.xcodeproj/project.pbxproj
+++ b/sample/SampleApp.xcodeproj/project.pbxproj
@@ -327,6 +327,7 @@
 			buildSettings = {
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				DEVELOPMENT_TEAM = J3D7L9FHSS;
+				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = arm64;
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -338,6 +339,8 @@
 			buildSettings = {
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				DEVELOPMENT_TEAM = J3D7L9FHSS;
+				EXCLUDED_ARCHS = "";
+				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = arm64;
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
@@ -496,6 +499,7 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = arm64;
 				INFOPLIST_FILE = SampleFramework/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
@@ -520,6 +524,7 @@
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = arm64;
 				INFOPLIST_FILE = SampleFramework/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
diff --git a/test/build.bats b/test/build.bats
index db553a11..4c9de9bc 100644
--- a/test/build.bats
+++ b/test/build.bats
@@ -8,9 +8,9 @@ load test_helper
   [[ ! "${output}" =~ "\[[ \*]*\]" ]]
   [[ ! "${output}" =~ "Time:" ]]
   file ./SampleFramework.framework/SampleFramework | grep -q arm.*
-  file ./SampleFramework.framework/SampleFramework | grep -q x86_64
+  file ./SampleFramework.framework/SampleFramework | grep -q i386
   ls ./SampleFramework.framework/Modules/SampleFramework.swiftmodule | grep -q arm*
-  ls ./SampleFramework.framework/Modules/SampleFramework.swiftmodule | grep -q x86_64.*
+  ls ./SampleFramework.framework/Modules/SampleFramework.swiftmodule | grep -q i386.*
 }
 
 @test "relax build framework --progress" {
@@ -26,9 +26,9 @@ load test_helper
 
   [[ -f ./SampleFramework.framework/SampleFramework ]]
   file ./SampleFramework.framework/SampleFramework | grep -q arm.*
-  file ./SampleFramework.framework/SampleFramework | grep -q -v x86_64
+  file ./SampleFramework.framework/SampleFramework | grep -q -v i386
   ls ./SampleFramework.framework/Modules/SampleFramework.swiftmodule | grep -q arm*
-  ls ./SampleFramework.framework/Modules/SampleFramework.swiftmodule | grep -q -v x86_64.*
+  ls ./SampleFramework.framework/Modules/SampleFramework.swiftmodule | grep -q -v i386.*
 }
 
 @test "relax build framework --framework" {
@@ -43,7 +43,7 @@ load test_helper
   [[ -d ./Sample.framework ]]
   [[ -f ./Sample.framework.zip ]]
   file ./Sample.framework/Sample | grep -q arm.*
-  file ./Sample.framework/Sample | grep -q x86_64
+  file ./Sample.framework/Sample | grep -q i386
 }
 
 @test "relax build staticlib --framework Sample --no-simulator" {
@@ -54,7 +54,7 @@ load test_helper
   [[ -f ./Sample.framework.zip ]]
 
   file ./Sample.framework/Sample | grep -q arm.*
-  file ./Sample.framework/Sample | grep -q -v x86_64
+  file ./Sample.framework/Sample | grep -q -v i386
 }
 
 @test "relax build: check workspace restoration" {
diff --git a/test/package.bats b/test/package.bats
index 02ce100e..afbe5545 100644
--- a/test/package.bats
+++ b/test/package.bats
@@ -6,7 +6,7 @@ load test_helper
   run relax export development
   run relax package development artifact
   assert_success
-  [[ -f artifact/Sample\ App.ipa ]]; \
+  [[ $(find artifact -name "Sample*.ipa") ]]; \
 	  [[ -f artifact/Sample\ App.xcarchive.zip ]]
 }
 
diff --git a/test/resign.bats b/test/resign.bats
index fe5daa52..1e5d284a 100644
--- a/test/resign.bats
+++ b/test/resign.bats
@@ -17,7 +17,7 @@ load test_helper
   run relax resign -k relax.keychain -i "com.scenee.SampleApp" -p "Relax AdHoc" -c "iPhone Distribution: Shin Yamamoto (J3D7L9FHSS)" "$(relax show development ipa)"
   assert_success
 
-  run relax validate "Sample App-resigned.ipa"
+  run relax validate "$(find . -name "*-resigned.ipa")"
   assert_success
 }