diff --git a/scripts/news_digest/README.md b/scripts/news_digest/README.md
index 0d5396e..c434a31 100644
--- a/scripts/news_digest/README.md
+++ b/scripts/news_digest/README.md
@@ -33,7 +33,7 @@ Edit `config.json` to add feeds and adjust settings:
   },
   "ollama": {
     "model": "kamekichi128/qwen3-4b-instruct-2507",
-    "prompt": "Summarize the following news article in 2-3 concise sentences:"
+    "prompt": "Summarize the following news article in 2-3 concise sentences (around 50 words):"
   },
   "feeds": [
     {
diff --git a/scripts/news_digest/config.json b/scripts/news_digest/config.json
index 1ec2396..977dccb 100644
--- a/scripts/news_digest/config.json
+++ b/scripts/news_digest/config.json
@@ -6,7 +6,7 @@
   },
   "ollama": {
     "model": "kamekichi128/qwen3-4b-instruct-2507:latest",
-    "prompt": "Summarize the following news article in 2-3 concise sentences:"
+    "prompt": "Summarize the following news article in 2-3 concise sentences (around 50 words):"
   },
   "feeds": [
     {
diff --git a/scripts/news_digest/main.py b/scripts/news_digest/main.py
index 12b244c..6c63ec6 100644
--- a/scripts/news_digest/main.py
+++ b/scripts/news_digest/main.py
@@ -309,7 +309,7 @@ def _run_test(mode: str, config: dict) -> None:
             sys.exit(1)
 
         model = ollama_cfg.get("model", "kamekichi128/qwen3-4b-instruct-2507")
-        prompt = ollama_cfg.get("prompt", "Summarize the following news article in 2-3 concise sentences:")
+        prompt = ollama_cfg.get("prompt", "Summarize the following news article in 2-3 concise sentences (around 50 words):")
 
         # Build test inputs: hardcoded articles + fetched article (full mode only)
         articles = list(_TEST_ARTICLES)
@@ -388,7 +388,7 @@ def main():
             ollama_cfg = config.get("ollama")
             if ollama_cfg:
                 ollama_model = ollama_cfg.get("model", "kamekichi128/qwen3-4b-instruct-2507")
-                ollama_prompt = ollama_cfg.get("prompt", "Summarize the following news article in 2-3 concise sentences:")
+                ollama_prompt = ollama_cfg.get("prompt", "Summarize the following news article in 2-3 concise sentences (around 50 words):")
                 logger.debug("Ollama summarization enabled (model: %s)", ollama_model)
             else:
                 ollama_model = ollama_prompt = None