diff --git a/Sources/XcodeGenCLI/Commands/GenerateCommand.swift b/Sources/XcodeGenCLI/Commands/GenerateCommand.swift
index 8ae7ba86..d03dd3ac 100644
--- a/Sources/XcodeGenCLI/Commands/GenerateCommand.swift
+++ b/Sources/XcodeGenCLI/Commands/GenerateCommand.swift
@@ -39,6 +39,11 @@ class GenerateCommand: ProjectCommand {
 
         let projectPath = projectDirectory + "\(project.name).xcodeproj"
 
+        // run pre gen command before we use the cache as the scrips may change it
+        if let command = project.options.preGenCommand {
+            try Task.run(bash: command, directory: projectDirectory.absolute().string)
+        }
+
         let cacheFilePath = self.cacheFilePath ??
             Path("~/.xcodegen/cache/\(projectSpecPath.absolute().string.md5)").absolute()
         var cacheFile: CacheFile?
@@ -69,11 +74,6 @@ class GenerateCommand: ProjectCommand {
             }
         }
 
-        // run pre gen command
-        if let command = project.options.preGenCommand {
-            try Task.run(bash: command, directory: projectDirectory.absolute().string)
-        }
-
         // validate project
         do {
             try project.validateMinimumXcodeGenVersion(version)