diff --git a/gain_viz/app.py b/gain_viz/app.py
index 9ec276f..d2f3f3e 100644
--- a/gain_viz/app.py
+++ b/gain_viz/app.py
@@ -173,6 +173,7 @@ def generate_spectrum_plot():
             
 
             # Save the plot
+            os.makedirs(os.path.dirname(PLOT_PATH), exist_ok=True)
             plt.savefig(PLOT_PATH, bbox_inches='tight')
             plt.close(fig)