diff --git a/apps/openchallenges/challenge-service/src/main/java/org/sagebionetworks/openchallenges/challenge/service/service/ChallengeAnalyticsService.java b/apps/openchallenges/challenge-service/src/main/java/org/sagebionetworks/openchallenges/challenge/service/service/ChallengeAnalyticsService.java
index 4e51c28445..aa2732b3a4 100644
--- a/apps/openchallenges/challenge-service/src/main/java/org/sagebionetworks/openchallenges/challenge/service/service/ChallengeAnalyticsService.java
+++ b/apps/openchallenges/challenge-service/src/main/java/org/sagebionetworks/openchallenges/challenge/service/service/ChallengeAnalyticsService.java
@@ -15,7 +15,10 @@ public ChallengesPerYearDto getChallengesPerYear() {
         Arrays.asList(
             "2007", "2008", "2009", "2010", "2011", "2012", "2013", "2014", "2015", "2016", "2017",
             "2018", "2019", "2020", "2021", "2022", "2023", "2024");
+
+    // The following line will be auto-updated by a script and should NOT be modified manually.
     List<Integer> challengeCounts =
+        /* AUTO-UPDATE MARKER */
         Arrays.asList(6, 9, 13, 17, 23, 29, 34, 41, 49, 59, 86, 97, 116, 135, 184, 243, 306, 317);
     Integer undatedChallengeCount = 171;
 
diff --git a/apps/openchallenges/db-update/update_db_csv.py b/apps/openchallenges/db-update/update_db_csv.py
index acd1cb56a3..888db4d3a2 100644
--- a/apps/openchallenges/db-update/update_db_csv.py
+++ b/apps/openchallenges/db-update/update_db_csv.py
@@ -1,4 +1,5 @@
 import os
+import re
 import csv
 import gspread
 import numpy as np
@@ -7,6 +8,11 @@
 GOOGLE_SHEET_TITLE = "OpenChallenges Data"
 CHALLENGE_FOLDER = "apps/openchallenges/challenge-service/src/main/resources/db"
 ORGANIZATION_FOLDER = "apps/openchallenges/organization-service/src/main/resources/db"
+PLOT_FILE = (
+    "apps/openchallenges/challenge-service/src/main/java/org/sagebionetworks/"
+    "openchallenges/challenge/service/service/ChallengeAnalyticsService.java"
+)
+UPDATE_MARKER = r"(\/\* AUTO-UPDATE MARKER \*\/\s+)"  # capture as a group to preserve
 
 
 def output_csv(df, output_filename, output_folder="", print_row=False):
@@ -216,6 +222,18 @@ def main(gc):
     output_csv(sub_types, "submission_types.csv",
                output_folder=CHALLENGE_FOLDER, print_row=True)
 
+    # Update static plot numbers (displayed on homepage).
+    updated_plot_numbers = wks.worksheet("(plot) challenges_by_year").acell("D3").value
+    with open(PLOT_FILE, "r", encoding="utf-8") as file:
+        curr_content = file.read()
+    updated_content = re.sub(
+        UPDATE_MARKER + r"Arrays.asList\([\d, ]+\);",
+        r"\1" + updated_plot_numbers,  # replace but keep reserved group (\1)
+        curr_content,
+    )
+    with open(PLOT_FILE, "w", encoding="utf-8") as file:
+        file.write(updated_content)
+
 
 if __name__ == "__main__":
     google_client = gspread.service_account(filename="service_account.json")