diff --git a/ChangeLog b/ChangeLog
index 02c624a..230bb9a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,10 +12,16 @@
 
 # IntaRNA
 
+# IntaRNA_plotRegions.R
+
+- fix deprecation warning
+
 ################################################################################  
 ################################################################################
 
-
+250213 Martin Raden
+ * R/IntaRNA_plotRegions.R
+   * fix deprecation warning when using element_lines() with ggplot >= 3.4.0
 
 ################################################################################
 ### version 3.4.1
diff --git a/R/IntaRNA_plotRegions.R b/R/IntaRNA_plotRegions.R
index bf7306b..a805f5e 100644
--- a/R/IntaRNA_plotRegions.R
+++ b/R/IntaRNA_plotRegions.R
@@ -158,7 +158,7 @@ regionPlot =
 	ylab("") +
 	scale_y_discrete(position = "right", breaks=dRegion$idx, labels=dRegion$id) +
 	geom_vline(aes(xintercept=(xmin))) +
-	theme(panel.grid.major.y=element_line(size=0.7,color="lightgray")
+	theme(panel.grid.major.y=element_line(linewidth=0.7,color="lightgray")
 			, axis.text.y=element_text(size=rel(yLabelScale))
 			#, plot.title = element_blank()
 	)