diff --git a/Sources/XCRemoteCache/Commands/Prepare/Integrate/XcodeProjIntegrate.swift b/Sources/XCRemoteCache/Commands/Prepare/Integrate/XcodeProjIntegrate.swift
index 7e7c27b3..95360ac5 100644
--- a/Sources/XCRemoteCache/Commands/Prepare/Integrate/XcodeProjIntegrate.swift
+++ b/Sources/XCRemoteCache/Commands/Prepare/Integrate/XcodeProjIntegrate.swift
@@ -227,11 +227,11 @@ struct XcodeProjIntegrate: Integrate {
         let previousRCPhases = target.buildPhases.filter(isRCPhase)
         target.buildPhases.removeAll(where: previousRCPhases.contains)
 
-        if target.buildPhases.map(\.buildPhase).contains(.sources) {
+        if let sourceIndex = target.buildPhases.map(\.buildPhase).firstIndex(of: .sources) {
             // add (pre|post)build phases only when a target has some compilation steps
             // otherwise they make no sense (nothing to store in an artifact)
             pbxproj.add(object: prebuildPhase)
-            target.buildPhases.insert(prebuildPhase, at: 0)
+            target.buildPhases.insert(prebuildPhase, at: sourceIndex)
             pbxproj.add(object: postbuildPhase)
             target.buildPhases.append(postbuildPhase)
         }