diff --git a/Dockerfile b/Dockerfile
index 1e5b033853..e5d7925e94 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -148,7 +148,6 @@ RUN set -e; \
     python -c "import os; from sentence_transformers import SentenceTransformer; SentenceTransformer(os.environ.get('AUXILIARY_EMBEDDING_MODEL', 'TaylorAI/bge-micro-v2'), device='cpu')"; \
     python -c "import os; from faster_whisper import WhisperModel; WhisperModel(os.environ['WHISPER_MODEL'], device='cpu', compute_type='int8', download_root=os.environ['WHISPER_MODEL_DIR'])"; \
     python -c "import os; import tiktoken; tiktoken.get_encoding(os.environ['TIKTOKEN_ENCODING_NAME'])"; \
-    python -c "import nltk; nltk.download('punkt_tab', download_dir='/usr/local/share/nltk_data')"; \
     else \
     pip3 install 'torch<=2.9.1' torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu --no-cache-dir; \
     uv pip install --system -r requirements.txt --no-cache-dir; \
@@ -157,7 +156,6 @@ RUN set -e; \
     python -c "import os; from sentence_transformers import SentenceTransformer; SentenceTransformer(os.environ.get('AUXILIARY_EMBEDDING_MODEL', 'TaylorAI/bge-micro-v2'), device='cpu')"; \
     python -c "import os; from faster_whisper import WhisperModel; WhisperModel(os.environ['WHISPER_MODEL'], device='cpu', compute_type='int8', download_root=os.environ['WHISPER_MODEL_DIR'])"; \
     python -c "import os; import tiktoken; tiktoken.get_encoding(os.environ['TIKTOKEN_ENCODING_NAME'])"; \
-    python -c "import nltk; nltk.download('punkt_tab', download_dir='/usr/local/share/nltk_data')"; \
     fi; \
     fi; \
     mkdir -p /app/backend/data; chown -R $UID:$GID /app/backend/data/; \
diff --git a/backend/requirements.txt b/backend/requirements.txt
index a8b091c37b..254425a988 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -78,7 +78,6 @@ python-pptx==1.0.2
 msoffcrypto-tool==6.0.0
 unstructured==0.22.31
 
-nltk==3.9.4
 Markdown==3.10.2
 beautifulsoup4==4.14.3
 lxml==6.1.1
diff --git a/backend/start.sh b/backend/start.sh
index 634f4bcc1b..b80e2fd67f 100755
--- a/backend/start.sh
+++ b/backend/start.sh
@@ -24,7 +24,6 @@ if [[ "${WEB_LOADER_ENGINE,,}" == "playwright" ]]; then
     playwright install chromium
     playwright install-deps chromium
   fi
-  python -c "import nltk; nltk.download('punkt_tab')"
 fi
 
 # ── Secret key setup ─────────────────────────────────────────────────────────
diff --git a/backend/start_windows.bat b/backend/start_windows.bat
index 4a57d34694..22aaaafc76 100644
--- a/backend/start_windows.bat
+++ b/backend/start_windows.bat
@@ -13,8 +13,6 @@ IF /I "%WEB_LOADER_ENGINE%" == "playwright" (
         playwright install chromium
         playwright install-deps chromium
     )
-
-    python -c "import nltk; nltk.download('punkt_tab')"
 )
 
 SET "KEY_FILE=.webui_secret_key"
diff --git a/pyproject.toml b/pyproject.toml
index 5b6b3e0749..ce1d71d436 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -85,7 +85,6 @@ dependencies = [
     "python-docx==1.2.0",
     "python-pptx==1.0.2",
     "msoffcrypto-tool==6.0.0",
-    "nltk==3.9.4",
     "Markdown==3.10.2",
     "beautifulsoup4==4.14.3",
     "lxml==6.1.1",
diff --git a/uv.lock b/uv.lock
index cff82b6167..62d9b8b266 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2690,21 +2690,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/df/93/a7b983643d1253bb223234b5b226e69de6cda02b76cdca7770f684b795f5/ninja-1.13.0-py3-none-win_arm64.whl", hash = "sha256:3c0b40b1f0bba764644385319028650087b4c1b18cdfa6f45cb39a3669b81aa9", size = 290806, upload-time = "2025-08-11T15:10:18.018Z" },
 ]
 
-[[package]]
-name = "nltk"
-version = "3.9.4"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "click" },
-    { name = "joblib" },
-    { name = "regex" },
-    { name = "tqdm" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/74/a1/b3b4adf15585a5bc4c357adde150c01ebeeb642173ded4d871e89468767c/nltk-3.9.4.tar.gz", hash = "sha256:ed03bc098a40481310320808b2db712d95d13ca65b27372f8a403949c8b523d0", size = 2946864, upload-time = "2026-03-24T06:13:40.641Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/9d/91/04e965f8e717ba0ab4bdca5c112deeab11c9e750d94c4d4602f050295d39/nltk-3.9.4-py3-none-any.whl", hash = "sha256:f2fa301c3a12718ce4a0e9305c5675299da5ad9e26068218b69d692fda84828f", size = 1552087, upload-time = "2026-03-24T06:13:38.47Z" },
-]
-
 [[package]]
 name = "numba"
 version = "0.65.1"
@@ -3025,7 +3010,6 @@ dependencies = [
     { name = "markdown" },
     { name = "mcp" },
     { name = "msoffcrypto-tool" },
-    { name = "nltk" },
     { name = "onnxruntime" },
     { name = "openai" },
     { name = "opencv-python-headless" },
@@ -3165,7 +3149,6 @@ requires-dist = [
     { name = "markdown", specifier = "==3.10.2" },
     { name = "mcp", specifier = "==1.27.2" },
     { name = "msoffcrypto-tool", specifier = "==6.0.0" },
-    { name = "nltk", specifier = "==3.9.4" },
     { name = "onnxruntime", specifier = "==1.26.0" },
     { name = "openai", specifier = "==2.29.0" },
     { name = "opencv-python-headless", specifier = "==4.13.0.92" },