diff --git a/Docs/ProjectSpec.md b/Docs/ProjectSpec.md
index ebb3a3f2..8196db5c 100644
--- a/Docs/ProjectSpec.md
+++ b/Docs/ProjectSpec.md
@@ -275,6 +275,9 @@ A source can be provided via a string (the path) or an object of the form:
 			- `sharedSupport`
 			- `plugins`
 		- [ ] **subpath**: **String** - The path inside of the destination to copy the files.
+		- [ ] **phaseOrder**: **String** - When the Copy Files phase should execute in relation to other phases. This can be one of the following values:
+			- `preCompile`: Run before the Compile Sources phase
+			- `postCompile`: Run after the Compile Sources phase
 	- `none` - Will not be added to any build phases
 - [ ] **type**: **String**: This can be one of the following values
 	- `file`: a file reference with a parent group will be created (Default for files or directories with extensions)
diff --git a/Sources/ProjectSpec/TargetSource.swift b/Sources/ProjectSpec/TargetSource.swift
index 08bc65cd..74aed837 100644
--- a/Sources/ProjectSpec/TargetSource.swift
+++ b/Sources/ProjectSpec/TargetSource.swift
@@ -42,7 +42,8 @@ public struct TargetSource: Equatable {
         public struct CopyFilesSettings: Equatable, Hashable {
             public static let xpcServices = CopyFilesSettings(
                 destination: .productsDirectory,
-                subpath: "$(CONTENTS_FOLDER_PATH)/XPCServices"
+                subpath: "$(CONTENTS_FOLDER_PATH)/XPCServices",
+                phaseOrder: .postCompile
             )
 
             public enum Destination: String {
@@ -72,13 +73,26 @@ public struct TargetSource: Equatable {
                     }
                 }
             }
+            
+            public enum PhaseOrder: String {
+                /// Run before the Compile Sources phase
+                case preCompile
+                /// Run after the Compile Sources and post-compile Run Script phases
+                case postCompile
+            }
 
             public var destination: Destination
             public var subpath: String
+            public var phaseOrder: PhaseOrder
 
-            public init(destination: Destination, subpath: String) {
+            public init(
+                destination: Destination,
+                subpath: String,
+                phaseOrder: PhaseOrder
+            ) {
                 self.destination = destination
                 self.subpath = subpath
+                self.phaseOrder = phaseOrder
             }
         }
 
@@ -119,6 +133,7 @@ public struct TargetSource: Equatable {
         self.type = type
         self.optional = optional
         self.buildPhase = buildPhase
+        self.headerVisibility = headerVisibility
     }
 }
 
@@ -189,5 +204,6 @@ extension TargetSource.BuildPhase.CopyFilesSettings: JSONObjectConvertible {
     public init(jsonDictionary: JSONDictionary) throws {
         destination = try jsonDictionary.json(atKeyPath: "destination")
         subpath = jsonDictionary.json(atKeyPath: "subpath") ?? ""
+        phaseOrder = jsonDictionary.json(atKeyPath: "phaseOrder") ?? .postCompile
     }
 }
diff --git a/Sources/XcodeGenKit/PBXProjGenerator.swift b/Sources/XcodeGenKit/PBXProjGenerator.swift
index 9dac781d..c7b0d40c 100644
--- a/Sources/XcodeGenKit/PBXProjGenerator.swift
+++ b/Sources/XcodeGenKit/PBXProjGenerator.swift
@@ -646,7 +646,13 @@ public class PBXProjGenerator {
             return sourceFilesByCopyFiles.mapValues { getBuildFilesForSourceFiles($0) }
         }
 
+        copyFilesBuildPhasesFiles.merge(getBuildFilesForCopyFilesPhases()) { $0 + $1 }
+        
         buildPhases += try target.prebuildScripts.map { try generateBuildScript(targetName: target.name, buildScript: $0) }
+        
+        buildPhases += copyFilesBuildPhasesFiles
+            .filter { $0.key.phaseOrder == .preCompile }
+            .map { generateCopyFiles(targetName: target.name, copyFiles: $0, buildPhaseFiles: $1) }
 
         let headersBuildPhaseFiles = getBuildFilesForPhase(.headers)
         if !headersBuildPhaseFiles.isEmpty && (target.type == .framework || target.type == .dynamicLibrary) {
@@ -689,8 +695,9 @@ public class PBXProjGenerator {
             buildPhases.append(script.reference)
         }
 
-        copyFilesBuildPhasesFiles.merge(getBuildFilesForCopyFilesPhases()) { $0 + $1 }
-        buildPhases += copyFilesBuildPhasesFiles.map { generateCopyFiles(targetName: target.name, copyFiles: $0, buildPhaseFiles: $1) }
+        buildPhases += copyFilesBuildPhasesFiles
+            .filter { $0.key.phaseOrder == .postCompile }
+            .map { generateCopyFiles(targetName: target.name, copyFiles: $0, buildPhaseFiles: $1) }
 
         if !targetFrameworkBuildFiles.isEmpty {
 
diff --git a/Sources/XcodeGenKit/SourceGenerator.swift b/Sources/XcodeGenKit/SourceGenerator.swift
index a56614e3..12709f61 100644
--- a/Sources/XcodeGenKit/SourceGenerator.swift
+++ b/Sources/XcodeGenKit/SourceGenerator.swift
@@ -73,7 +73,8 @@ class SourceGenerator {
             if headerVisibility == .public {
                 chosenBuildPhase = .copyFiles(TargetSource.BuildPhase.CopyFilesSettings(
                     destination: .productsDirectory,
-                    subpath: "include/$(PRODUCT_NAME)"
+                    subpath: "include/$(PRODUCT_NAME)",
+                    phaseOrder: .preCompile
                 ))
             } else {
                 chosenBuildPhase = nil
@@ -194,7 +195,8 @@ class SourceGenerator {
                 guard targetType == .staticLibrary else { return nil }
                 return .copyFiles(TargetSource.BuildPhase.CopyFilesSettings(
                     destination: .productsDirectory,
-                    subpath: "include/$(PRODUCT_NAME)"
+                    subpath: "include/$(PRODUCT_NAME)",
+                    phaseOrder: .preCompile
                 ))
             case "framework": return .frameworks
             case "xpc": return .copyFiles(.xpcServices)
diff --git a/Tests/Fixtures/TestProject/Project.xcodeproj/project.pbxproj b/Tests/Fixtures/TestProject/Project.xcodeproj/project.pbxproj
index badfd0f1..7804b3e4 100644
--- a/Tests/Fixtures/TestProject/Project.xcodeproj/project.pbxproj
+++ b/Tests/Fixtures/TestProject/Project.xcodeproj/project.pbxproj
@@ -913,8 +913,8 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = CL_399755008402 /* Build configuration list for PBXNativeTarget "StaticLibrary_ObjC" */;
 			buildPhases = (
-				SBP_39975500840 /* Sources */,
 				CFBP_3265670993 /* CopyFiles */,
+				SBP_39975500840 /* Sources */,
 			);
 			buildRules = (
 			);