diff --git a/.gitignore b/.gitignore
index caf10c28..1f55464b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ xcuserdata
 *.xcuserstate
 XcodeGen.xcodeproj
 xcodegen.zip
+.vscode/launch.json
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68b1b5e8..c5394630 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,10 +2,22 @@
 
 ## Next Version
 
+### Fixed
+
+- Fixed crash caused by a simultaneous write during a glob processing [#1177](https://github.com/yonaskolb/XcodeGen/issues/1177) @tr1ckyf0x
+
+## 2.26.0
+
+### Added
+
+- Added the option to specify a `location` in a test target [#1150](https://github.com/yonaskolb/XcodeGen/issues/1150) @KrisRJack
+
 ### Changed
 
 - Speed up source inclusion checking for big projects [#1122](https://github.com/yonaskolb/XcodeGen/pull/1122) @PaulTaykalo 
 
+[Commits](https://github.com/yonaskolb/XcodeGen/compare/2.25.0...2.26.0)
+
 ## 2.25.0
 
 ### Added
diff --git a/Docs/ProjectSpec.md b/Docs/ProjectSpec.md
index c99f1462..1874c94d 100644
--- a/Docs/ProjectSpec.md
+++ b/Docs/ProjectSpec.md
@@ -834,6 +834,7 @@ A multiline script can be written using the various YAML multiline methods, for
 - [x] **name**: **String** - The name of the target
 - [ ] **parallelizable**: **Bool** - Whether to run tests in parallel. Defaults to false
 - [ ] **randomExecutionOrder**: **Bool** - Whether to run tests in a random order. Defaults to false
+- [ ] **location**: **String** - GPX file or predefined value for simulating location. See [Simulate Location](#simulate-location) for location examples.
 - [ ] **skipped**: **Bool** - Whether to skip all of the test target tests. Defaults to false
 - [ ] **skippedTests**: **[String]** - List of tests in the test target to skip. Defaults to empty
 - [ ] **selectedTests**: **[String]** - List of tests in the test target to whitelist and select. Defaults to empty. This will override `skippedTests` if provided
diff --git a/Makefile b/Makefile
index 79567119..aa515b3d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 TOOL_NAME = XcodeGen
 export EXECUTABLE_NAME = xcodegen
-VERSION = 2.25.0
+VERSION = 2.26.0
 
 PREFIX = /usr/local
 INSTALL_PATH = $(PREFIX)/bin/$(EXECUTABLE_NAME)
@@ -46,4 +46,4 @@ brew:
 	brew bump-formula-pr --url=$(RELEASE_TAR) XcodeGen
 
 archive: build
-	./scripts/archive.sh $(EXECUTABLE_PATH)
+	./scripts/archive.sh "$(EXECUTABLE_PATH)"
diff --git a/Package.resolved b/Package.resolved
index 4d75c731..e883890e 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -78,8 +78,8 @@
         "repositoryURL": "https://github.com/tuist/XcodeProj.git",
         "state": {
           "branch": null,
-          "revision": "446f3a0db73e141c7f57e26fcdb043096b1db52c",
-          "version": "8.3.1"
+          "revision": "aa2a42c7a744ca18b5918771fdd6cf40f9753db5",
+          "version": "8.6.0"
         }
       },
       {
diff --git a/Package.swift b/Package.swift
index d4cc5201..c1d72975 100644
--- a/Package.swift
+++ b/Package.swift
@@ -16,7 +16,7 @@ let package = Package(
         .package(url: "https://github.com/yonaskolb/JSONUtilities.git", from: "4.2.0"),
         .package(url: "https://github.com/kylef/Spectre.git", from: "0.9.2"),
         .package(url: "https://github.com/onevcat/Rainbow.git", from: "3.0.0"),
-        .package(url: "https://github.com/tuist/XcodeProj.git", from: "8.3.1"),
+        .package(url: "https://github.com/tuist/XcodeProj.git", from: "8.6.0"),
         .package(url: "https://github.com/jakeheis/SwiftCLI.git", from: "6.0.3"),
         .package(url: "https://github.com/mxcl/Version", from: "2.0.0"),
         .package(url: "https://github.com/SwiftDocOrg/GraphViz.git", .exact("0.2.0")),
diff --git a/README.md b/README.md
index ca78aaf0..6b036a52 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ swift run xcodegen
 Add the following to your Package.swift file's dependencies:
 
 ```swift
-.package(url: "https://github.com/yonaskolb/XcodeGen.git", from: "2.25.0"),
+.package(url: "https://github.com/yonaskolb/XcodeGen.git", from: "2.26.0"),
 ```
 
 And then import wherever needed: `import XcodeGenKit`
diff --git a/Sources/ProjectSpec/Scheme.swift b/Sources/ProjectSpec/Scheme.swift
index ed921c89..25ce697c 100644
--- a/Sources/ProjectSpec/Scheme.swift
+++ b/Sources/ProjectSpec/Scheme.swift
@@ -184,6 +184,7 @@ public struct Scheme: Equatable {
         public var deleteScreenshotsWhenEachTestSucceeds: Bool
 
         public struct TestTarget: Equatable, ExpressibleByStringLiteral {
+            
             public static let randomExecutionOrderDefault = false
             public static let parallelizableDefault = false
 
@@ -191,6 +192,7 @@ public struct Scheme: Equatable {
             public let targetReference: TargetReference
             public var randomExecutionOrder: Bool
             public var parallelizable: Bool
+            public var location: String?
             public var skipped: Bool
             public var skippedTests: [String]
             public var selectedTests: [String]
@@ -199,6 +201,7 @@ public struct Scheme: Equatable {
                 targetReference: TargetReference,
                 randomExecutionOrder: Bool = randomExecutionOrderDefault,
                 parallelizable: Bool = parallelizableDefault,
+                location: String? = nil,
                 skipped: Bool = false,
                 skippedTests: [String] = [],
                 selectedTests: [String] = []
@@ -206,6 +209,7 @@ public struct Scheme: Equatable {
                 self.targetReference = targetReference
                 self.randomExecutionOrder = randomExecutionOrder
                 self.parallelizable = parallelizable
+                self.location = location
                 self.skipped = skipped
                 self.skippedTests = skippedTests
                 self.selectedTests = selectedTests
@@ -216,6 +220,7 @@ public struct Scheme: Equatable {
                     targetReference = try TargetReference(value)
                     randomExecutionOrder = false
                     parallelizable = false
+                    location = nil
                     skipped = false
                     skippedTests = []
                     selectedTests = []
@@ -536,6 +541,7 @@ extension Scheme.Test.TestTarget: JSONObjectConvertible {
         targetReference = try TargetReference(jsonDictionary.json(atKeyPath: "name"))
         randomExecutionOrder = jsonDictionary.json(atKeyPath: "randomExecutionOrder") ?? Scheme.Test.TestTarget.randomExecutionOrderDefault
         parallelizable = jsonDictionary.json(atKeyPath: "parallelizable") ?? Scheme.Test.TestTarget.parallelizableDefault
+        location = jsonDictionary.json(atKeyPath: "location") ?? nil
         skipped = jsonDictionary.json(atKeyPath: "skipped") ?? false
         skippedTests = jsonDictionary.json(atKeyPath: "skippedTests") ?? []
         selectedTests = jsonDictionary.json(atKeyPath: "selectedTests") ?? []
@@ -559,6 +565,9 @@ extension Scheme.Test.TestTarget: JSONEncodable {
         if parallelizable != Scheme.Test.TestTarget.parallelizableDefault {
             dict["parallelizable"] = parallelizable
         }
+        if let location = location {
+            dict["location"] = location
+        }
         if skipped {
             dict["skipped"] = skipped
         }
diff --git a/Sources/XcodeGen/main.swift b/Sources/XcodeGen/main.swift
index 2de4bb42..8ba636bf 100644
--- a/Sources/XcodeGen/main.swift
+++ b/Sources/XcodeGen/main.swift
@@ -3,6 +3,6 @@ import ProjectSpec
 import XcodeGenCLI
 import Version
 
-let version = Version("2.25.0")
+let version = Version("2.26.0")
 let cli = XcodeGenCLI(version: version)
 cli.execute()
diff --git a/Sources/XcodeGenCore/Atomic.swift b/Sources/XcodeGenCore/Atomic.swift
new file mode 100644
index 00000000..c7911ca4
--- /dev/null
+++ b/Sources/XcodeGenCore/Atomic.swift
@@ -0,0 +1,27 @@
+//
+//  Atomic.swift
+//  
+//
+//  Created by Vladislav Lisianskii on 23.02.2022.
+//
+
+import Foundation
+
+@propertyWrapper
+struct Atomic<Value> {
+    private let queue = DispatchQueue(label: "com.xcodegencore.atomic")
+    private var value: Value
+
+    init(wrappedValue: Value) {
+        self.value = wrappedValue
+    }
+
+    var wrappedValue: Value {
+        get {
+            return queue.sync { value }
+        }
+        set {
+            queue.sync { value = newValue }
+        }
+    }
+}
diff --git a/Sources/XcodeGenCore/Glob.swift b/Sources/XcodeGenCore/Glob.swift
index 596e986c..e3025eab 100644
--- a/Sources/XcodeGenCore/Glob.swift
+++ b/Sources/XcodeGenCore/Glob.swift
@@ -57,7 +57,7 @@ public class Glob: Collection {
 
     public static let defaultBlacklistedDirectories = ["node_modules", "Pods"]
 
-    private var isDirectoryCache = [String: Bool]()
+    @Atomic private var isDirectoryCache = [String: Bool]()
 
     public let behavior: Behavior
     public let blacklistedDirectories: [String]
diff --git a/Sources/XcodeGenKit/SchemeGenerator.swift b/Sources/XcodeGenKit/SchemeGenerator.swift
index 67f68196..e5fa2d54 100644
--- a/Sources/XcodeGenKit/SchemeGenerator.swift
+++ b/Sources/XcodeGenKit/SchemeGenerator.swift
@@ -187,12 +187,28 @@ public class SchemeGenerator {
             runPostActionsOnFailure: scheme.build.runPostActionsOnFailure
         )
 
-        let testables = zip(testTargets, testBuildTargetEntries).map { testTarget, testBuilEntries in
-            XCScheme.TestableReference(
+        let testables: [XCScheme.TestableReference] = zip(testTargets, testBuildTargetEntries).map { testTarget, testBuildEntries in
+            
+            var locationScenarioReference: XCScheme.LocationScenarioReference?
+            if var location = testTarget.location {
+                
+                if location.contains(".gpx") {
+                    var path = Path(components: [project.options.schemePathPrefix, location])
+                    path = path.simplifyingParentDirectoryReferences()
+                    location = path.string
+                }
+                
+                let referenceType = location.contains(".gpx") ? "0" : "1"
+                locationScenarioReference = XCScheme.LocationScenarioReference(identifier: location, referenceType: referenceType)
+                
+            }
+            
+            return XCScheme.TestableReference(
                 skipped: testTarget.skipped,
                 parallelizable: testTarget.parallelizable,
                 randomExecutionOrdering: testTarget.randomExecutionOrder,
-                buildableReference: testBuilEntries.buildableReference,
+                buildableReference: testBuildEntries.buildableReference,
+                locationScenarioReference: locationScenarioReference,
                 skippedTests: testTarget.skippedTests.map(XCScheme.TestItem.init),
                 selectedTests: testTarget.selectedTests.map(XCScheme.TestItem.init),
                 useTestSelectionWhitelist: !testTarget.selectedTests.isEmpty ? true : nil
diff --git a/Tests/Fixtures/TestProject/Project.xcodeproj/xcshareddata/xcschemes/App_Scheme.xcscheme b/Tests/Fixtures/TestProject/Project.xcodeproj/xcshareddata/xcschemes/App_Scheme.xcscheme
index 47aae221..5aa4973c 100644
--- a/Tests/Fixtures/TestProject/Project.xcodeproj/xcshareddata/xcschemes/App_Scheme.xcscheme
+++ b/Tests/Fixtures/TestProject/Project.xcodeproj/xcshareddata/xcschemes/App_Scheme.xcscheme
@@ -53,6 +53,10 @@
                BlueprintName = "App_iOS_Tests"
                ReferencedContainer = "container:Project.xcodeproj">
             </BuildableReference>
+            <LocationScenarioReference
+               identifier = "New York, NY, USA"
+               referenceType = "1">
+            </LocationScenarioReference>
          </TestableReference>
       </Testables>
       <MacroExpansion>
diff --git a/Tests/Fixtures/TestProject/project.yml b/Tests/Fixtures/TestProject/project.yml
index 85662468..ff6d045c 100644
--- a/Tests/Fixtures/TestProject/project.yml
+++ b/Tests/Fixtures/TestProject/project.yml
@@ -426,6 +426,7 @@ schemes:
         - name: App_iOS_Tests
           parallelizable: true
           randomExecutionOrder: true
+          location: New York, NY, USA
       customLLDBInit: ${SRCROOT}/.lldbinit
 targetTemplates:
   MyTemplate:
diff --git a/Tests/ProjectSpecTests/SpecLoadingTests.swift b/Tests/ProjectSpecTests/SpecLoadingTests.swift
index 2282a8fa..d1c0e6c6 100644
--- a/Tests/ProjectSpecTests/SpecLoadingTests.swift
+++ b/Tests/ProjectSpecTests/SpecLoadingTests.swift
@@ -790,6 +790,7 @@ class SpecLoadingTests: XCTestCase {
                                 "name": "ExternalProject/Target2",
                                 "parallelizable": true,
                                 "skipped": true,
+                                "location": "test.gpx",
                                 "randomExecutionOrder": true,
                                 "skippedTests": ["Test/testExample()"],
                             ],
@@ -836,6 +837,7 @@ class SpecLoadingTests: XCTestCase {
                             targetReference: "ExternalProject/Target2",
                             randomExecutionOrder: true,
                             parallelizable: true,
+                            location: "test.gpx",
                             skipped: true,
                             skippedTests: ["Test/testExample()"]
                         ),
@@ -856,6 +858,7 @@ class SpecLoadingTests: XCTestCase {
                             [
                                 "name": "ExternalProject/Target2",
                                 "parallelizable": true,
+                                "location": "New York, NY, USA",
                                 "randomExecutionOrder": true,
                                 "selectedTests": ["Test/testExample()"],
                             ],
@@ -877,6 +880,7 @@ class SpecLoadingTests: XCTestCase {
                             targetReference: "ExternalProject/Target2",
                             randomExecutionOrder: true,
                             parallelizable: true,
+                            location: "New York, NY, USA",
                             selectedTests: ["Test/testExample()"]
                         ),
                     ]
diff --git a/Tests/XcodeGenKitTests/SchemeGeneratorTests.swift b/Tests/XcodeGenKitTests/SchemeGeneratorTests.swift
index 3c27b8a9..b78a6177 100644
--- a/Tests/XcodeGenKitTests/SchemeGeneratorTests.swift
+++ b/Tests/XcodeGenKitTests/SchemeGeneratorTests.swift
@@ -49,11 +49,14 @@ class SchemeGeneratorTests: XCTestCase {
                 let preAction = Scheme.ExecutionAction(name: "Script", script: "echo Starting", settingsTarget: app.name)
                 let simulateLocation = Scheme.SimulateLocation(allow: true, defaultLocation: "New York, NY, USA")
                 let storeKitConfiguration = "Configuration.storekit"
-                let scheme = Scheme(
+                let scheme = try Scheme(
                     name: "MyScheme",
                     build: Scheme.Build(targets: [buildTarget], preActions: [preAction]),
                     run: Scheme.Run(config: "Debug", askForAppToLaunch: true, launchAutomaticallySubstyle: "2", simulateLocation: simulateLocation, storeKitConfiguration: storeKitConfiguration, customLLDBInit: "/sample/.lldbinit"),
-                    test: Scheme.Test(config: "Debug", customLLDBInit: "/test/.lldbinit"),
+                    test: Scheme.Test(config: "Debug", targets: [
+                        Scheme.Test.TestTarget(targetReference: TargetReference(framework.name), location: "test.gpx"),
+                        Scheme.Test.TestTarget(targetReference: TargetReference(framework.name), location: "New York, NY, USA")
+                    ], customLLDBInit: "/test/.lldbinit"),
                     profile: Scheme.Profile(config: "Release", askForAppToLaunch: true)
                 )
                 let project = Project(
@@ -109,6 +112,13 @@ class SchemeGeneratorTests: XCTestCase {
                 try expect(xcscheme.launchAction?.customLLDBInitFile) == "/sample/.lldbinit"
                 try expect(xcscheme.testAction?.customLLDBInitFile) == "/test/.lldbinit"
                 try expect(xcscheme.testAction?.systemAttachmentLifetime).to.beNil()
+                
+                try expect(xcscheme.testAction?.testables[0].locationScenarioReference?.referenceType) == "0"
+                try expect(xcscheme.testAction?.testables[0].locationScenarioReference?.identifier) == "../test.gpx"
+                
+                try expect(xcscheme.testAction?.testables[1].locationScenarioReference?.referenceType) == "1"
+                try expect(xcscheme.testAction?.testables[1].locationScenarioReference?.identifier) == "New York, NY, USA"
+                
             }
 
             let frameworkTarget = Scheme.BuildTarget(target: .local(framework.name), buildTypes: [.archiving])
diff --git a/scripts/archive.sh b/scripts/archive.sh
index ad335507..0a9ebb58 100755
--- a/scripts/archive.sh
+++ b/scripts/archive.sh
@@ -10,7 +10,7 @@ LICENSE=LICENSE
 # copy
 
 mkdir -p $BINDIR
-cp -f $1 $BINDIR
+cp -f "$1" $BINDIR
 
 mkdir -p $SHAREDIR
 cp -R SettingPresets $SHAREDIR/SettingPresets