diff --git a/server/Dockerfile b/server/Dockerfile
index 6c672ee4..47f47bcb 100644
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -17,7 +17,7 @@ COPY pyproject.toml uv.lock /app/
 RUN touch README.md && env uv sync --compile-bytecode --locked
 
 # pre-download nltk packages
-RUN uv run python -c "import nltk; nltk.download('punkt_tab'); nltk.download('averaged_perceptron_tagger')"
+RUN uv run python -c "import nltk; nltk.download('punkt_tab'); nltk.download('averaged_perceptron_tagger_eng')"
 
 # bootstrap
 COPY alembic.ini runserver.sh /app/
diff --git a/server/reflector/llm/base.py b/server/reflector/llm/base.py
index 5531f7a4..1e8cb1c9 100644
--- a/server/reflector/llm/base.py
+++ b/server/reflector/llm/base.py
@@ -47,7 +47,7 @@ class LLM:
         if not cls._nltk_downloaded:
             nltk.download("punkt_tab")
             # For POS tagging
-            nltk.download("averaged_perceptron_tagger")
+            nltk.download("averaged_perceptron_tagger_eng")
             cls._nltk_downloaded = True
 
     @classmethod