diff --git a/ChangeLog b/ChangeLog
index 3af7749..614f843 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2023-11-27 Wenjie Wang <wang@wwenjie.org>
+
+	* Fixed CRAN warning: "GibbsSampler.h:91:27: warning: format ‘%d’
+	expects argument of type ‘int’, but argument 2 has type ‘Size’"
+
+	* Changed package version to 0.4-6
+
 2023-08-19 Wenjie Wang <wang@wwenjie.org>
 
 	* Fixed broken roxygen2 documentation.
diff --git a/src/GibbsSampler.h b/src/GibbsSampler.h
index 89cbdbf..3f7e2d2 100644
--- a/src/GibbsSampler.h
+++ b/src/GibbsSampler.h
@@ -88,7 +88,7 @@ void GibbsSampler<M>::runGibbs(const Prior_type& prior,
 
     if (trace && (i % nReport == 0)) {
       //std::cout << "Iteration(" << i << ")" << std::endl;
-      Rprintf("Iteration(%d)\n", i);
+      Rprintf("Iteration(%u)\n", static_cast<unsigned int>(i));
     }
 
     pm_->gibbsKernel(prior, par);