diff --git a/rust/proc_macro.go b/rust/proc_macro.go
index 2719161..49dbd8d 100644
--- a/rust/proc_macro.go
+++ b/rust/proc_macro.go
@@ -65,7 +65,8 @@
 	fileName := procMacro.getStem(ctx) + ctx.toolchain().ProcMacroSuffix()
 	outputFile := android.PathForModuleOut(ctx, fileName)
 
-	srcPath := srcPathFromModuleSrcs(ctx, procMacro.baseCompiler.Properties.Srcs)
+	srcPath, paths := srcPathFromModuleSrcs(ctx, procMacro.baseCompiler.Properties.Srcs)
+	deps.SrcDeps = paths
 
 	procMacro.unstrippedOutputFile = outputFile