diff --git a/src/seismic_hazard_forecasting.py b/src/seismic_hazard_forecasting.py
index 5dad4cc..b1efe81 100644
--- a/src/seismic_hazard_forecasting.py
+++ b/src/seismic_hazard_forecasting.py
@@ -495,7 +495,7 @@ verbose: {verbose}")
 
             # Save the figure
             fig.canvas.draw()
-            plt.savefig("overlay_" + str(j) + ".png", bbox_inches="tight", pad_inches=0, transparent=True)
+            plt.savefig("overlay_" + str(j) + ".svg", bbox_inches="tight", pad_inches=0, transparent=True)
             plt.close(fig)
 
             # Make the color bar
@@ -518,5 +518,5 @@ verbose: {verbose}")
             ax.set_yticklabels([f"{tick:.2f}" for tick in tick_positions])  # format tick labels
             ax.set_title(imt, pad=15)
             fig.subplots_adjust(left=0.25, right=0.75, bottom=0.05, top=0.95)  # Adjust Layout
-            fig.savefig("colorbar_" + str(j) + ".png", bbox_inches='tight')
+            fig.savefig("colorbar_" + str(j) + ".svg", bbox_inches='tight')
             plt.close(fig)