diff --git a/backend/open_webui/config.py b/backend/open_webui/config.py
index bc00611565..f8868940d8 100644
--- a/backend/open_webui/config.py
+++ b/backend/open_webui/config.py
@@ -925,6 +925,8 @@ EXTERNAL_DOCUMENT_LOADER_HEADERS = external_document_loader_headers
 
 TIKA_SERVER_URL = os.getenv('TIKA_SERVER_URL', 'http://tika:9998')
 
+TIKA_SERVER_VERSION = os.getenv('TIKA_SERVER_VERSION', '3')
+
 DOCLING_SERVER_URL = os.getenv('DOCLING_SERVER_URL', 'http://docling:5001')
 
 DOCLING_API_KEY = os.getenv('DOCLING_API_KEY', '')
@@ -2878,6 +2880,7 @@ DEFAULT_CONFIG = {
     'rag.external_document_loader_api_key': EXTERNAL_DOCUMENT_LOADER_API_KEY,
     'rag.external_document_loader_headers': EXTERNAL_DOCUMENT_LOADER_HEADERS,
     'rag.tika_server_url': TIKA_SERVER_URL,
+    'rag.tika_server_version': TIKA_SERVER_VERSION,
     'rag.docling_server_url': DOCLING_SERVER_URL,
     'rag.docling_api_key': DOCLING_API_KEY,
     'rag.docling_params': DOCLING_PARAMS,
diff --git a/backend/open_webui/retrieval/loaders/main.py b/backend/open_webui/retrieval/loaders/main.py
index c86590583b..e1864eac49 100644
--- a/backend/open_webui/retrieval/loaders/main.py
+++ b/backend/open_webui/retrieval/loaders/main.py
@@ -186,10 +186,11 @@ class PptxLoader:
 
 
 class TikaLoader:
-    def __init__(self, url, file_path, mime_type=None, extract_images=None):
+    def __init__(self, url, file_path, mime_type=None, extract_images=None, server_version='3'):
         self.url = url
         self.file_path = file_path
         self.mime_type = mime_type
+        self.server_version = str(server_version or '3')
 
         self.extract_images = extract_images
 
@@ -205,16 +206,15 @@ class TikaLoader:
         if self.extract_images == True:
             headers['X-Tika-PDFextractInlineImages'] = 'true'
 
-        endpoint = self.url
-        if not endpoint.endswith('/'):
-            endpoint += '/'
-        endpoint += 'tika/text'
+        endpoint_path = 'tika/json/text' if self.server_version == '4' else 'tika/text'
+        content_key = 'tk:content' if self.server_version == '4' else 'X-TIKA:content'
+        endpoint = f'{self.url.rstrip("/")}/{endpoint_path}'
 
         r = requests.put(endpoint, data=data, headers=headers, verify=REQUESTS_VERIFY)
 
         if r.ok:
             raw_metadata = r.json()
-            text = raw_metadata.get('X-TIKA:content', '<No text content found>').strip()
+            text = raw_metadata.get(content_key, '<No text content found>').strip()
 
             if 'Content-Type' in raw_metadata:
                 headers['Content-Type'] = raw_metadata['Content-Type']
@@ -503,6 +503,7 @@ class Loader:
                 loader = TikaLoader(
                     url=self.kwargs.get('TIKA_SERVER_URL'),
                     file_path=file_path,
+                    server_version=self.kwargs.get('TIKA_SERVER_VERSION'),
                     extract_images=self.kwargs.get('PDF_EXTRACT_IMAGES'),
                 )
         elif (
diff --git a/backend/open_webui/retrieval/utils.py b/backend/open_webui/retrieval/utils.py
index a6e1bd6857..2c1ff1e7cd 100644
--- a/backend/open_webui/retrieval/utils.py
+++ b/backend/open_webui/retrieval/utils.py
@@ -104,6 +104,7 @@ LOADER_CONFIG_KEYS = {
     'EXTERNAL_DOCUMENT_LOADER_API_KEY': 'rag.external_document_loader_api_key',
     'EXTERNAL_DOCUMENT_LOADER_HEADERS': 'rag.external_document_loader_headers',
     'TIKA_SERVER_URL': 'rag.tika_server_url',
+    'TIKA_SERVER_VERSION': 'rag.tika_server_version',
     'DOCLING_SERVER_URL': 'rag.docling_server_url',
     'DOCLING_API_KEY': 'rag.docling_api_key',
     'DOCLING_PARAMS': 'rag.docling_params',
diff --git a/backend/open_webui/routers/retrieval.py b/backend/open_webui/routers/retrieval.py
index 12d9c23db5..ee9eeb9339 100644
--- a/backend/open_webui/routers/retrieval.py
+++ b/backend/open_webui/routers/retrieval.py
@@ -387,6 +387,7 @@ RETRIEVAL_CONFIG_KEYS = {
     'TAVILY_EXTRACT_DEPTH': 'web.search.tavily_extract_depth',
     'TEXT_SPLITTER': 'rag.text_splitter',
     'TIKA_SERVER_URL': 'rag.tika_server_url',
+    'TIKA_SERVER_VERSION': 'rag.tika_server_version',
     'TIKTOKEN_ENCODING_NAME': 'rag.tiktoken_encoding_name',
     'TOP_K': 'rag.top_k',
     'TOP_K_RERANKER': 'rag.top_k_reranker',
@@ -659,6 +660,7 @@ async def get_rag_config(request: Request, user=Depends(get_admin_user)):
         'EXTERNAL_DOCUMENT_LOADER_API_KEY': config.EXTERNAL_DOCUMENT_LOADER_API_KEY,
         'EXTERNAL_DOCUMENT_LOADER_HEADERS': config.EXTERNAL_DOCUMENT_LOADER_HEADERS,
         'TIKA_SERVER_URL': config.TIKA_SERVER_URL,
+        'TIKA_SERVER_VERSION': config.TIKA_SERVER_VERSION,
         'DOCLING_SERVER_URL': config.DOCLING_SERVER_URL,
         'DOCLING_API_KEY': config.DOCLING_API_KEY,
         'DOCLING_PARAMS': config.DOCLING_PARAMS,
@@ -894,6 +896,7 @@ class ConfigForm(BaseModel):
     EXTERNAL_DOCUMENT_LOADER_HEADERS: dict | None = None
 
     TIKA_SERVER_URL: str | None = None
+    TIKA_SERVER_VERSION: str | None = None
     DOCLING_SERVER_URL: str | None = None
     DOCLING_API_KEY: str | None = None
     DOCLING_PARAMS: dict | None = None
@@ -1070,6 +1073,9 @@ async def update_rag_config(request: Request, form_data: ConfigForm, user=Depend
     config.TIKA_SERVER_URL = (
         form_data.TIKA_SERVER_URL if form_data.TIKA_SERVER_URL is not None else config.TIKA_SERVER_URL
     )
+    config.TIKA_SERVER_VERSION = (
+        form_data.TIKA_SERVER_VERSION if form_data.TIKA_SERVER_VERSION is not None else config.TIKA_SERVER_VERSION
+    )
     config.DOCLING_SERVER_URL = (
         form_data.DOCLING_SERVER_URL if form_data.DOCLING_SERVER_URL is not None else config.DOCLING_SERVER_URL
     )
@@ -1368,6 +1374,7 @@ async def update_rag_config(request: Request, form_data: ConfigForm, user=Depend
         'EXTERNAL_DOCUMENT_LOADER_API_KEY': config.EXTERNAL_DOCUMENT_LOADER_API_KEY,
         'EXTERNAL_DOCUMENT_LOADER_HEADERS': config.EXTERNAL_DOCUMENT_LOADER_HEADERS,
         'TIKA_SERVER_URL': config.TIKA_SERVER_URL,
+        'TIKA_SERVER_VERSION': config.TIKA_SERVER_VERSION,
         'DOCLING_SERVER_URL': config.DOCLING_SERVER_URL,
         'DOCLING_API_KEY': config.DOCLING_API_KEY,
         'DOCLING_PARAMS': config.DOCLING_PARAMS,
diff --git a/src/lib/apis/retrieval/index.ts b/src/lib/apis/retrieval/index.ts
index f913e3e868..3e3a2d2a00 100644
--- a/src/lib/apis/retrieval/index.ts
+++ b/src/lib/apis/retrieval/index.ts
@@ -56,6 +56,7 @@ type RAGConfigForm = {
 	ENABLE_GOOGLE_DRIVE_INTEGRATION?: boolean;
 	ENABLE_ONEDRIVE_INTEGRATION?: boolean;
 	EXTERNAL_DOCUMENT_LOADER_HEADERS?: Record<string, string>;
+	TIKA_SERVER_VERSION?: string | null;
 	chunk?: ChunkConfigForm;
 	content_extraction?: ContentExtractConfigForm;
 	web_loader_ssl_verification?: boolean;
diff --git a/src/lib/components/admin/Settings/Documents.svelte b/src/lib/components/admin/Settings/Documents.svelte
index 2ae89640eb..2c49b05520 100644
--- a/src/lib/components/admin/Settings/Documents.svelte
+++ b/src/lib/components/admin/Settings/Documents.svelte
@@ -653,16 +653,27 @@
 						{/if}
 					</AdminSettingField>
 				{:else if RAGConfig.CONTENT_EXTRACTION_ENGINE === 'tika'}
-					<AdminSettingField
-						label={$i18n.t('Tika Server URL')}
-						description={$i18n.t('Tika server endpoint used for content extraction.')}
-					>
-						<input
-							class={inputClass}
-							placeholder={$i18n.t('Enter Tika Server URL')}
-							bind:value={RAGConfig.TIKA_SERVER_URL}
-						/>
-					</AdminSettingField>
+					<div class="grid grid-cols-1 gap-x-3 gap-y-2.5 sm:grid-cols-2">
+						<AdminSettingField
+							label={$i18n.t('Tika Server URL')}
+							description={$i18n.t('Tika server endpoint used for content extraction.')}
+						>
+							<input
+								class={inputClass}
+								placeholder={$i18n.t('Enter Tika Server URL')}
+								bind:value={RAGConfig.TIKA_SERVER_URL}
+							/>
+						</AdminSettingField>
+						<AdminSettingField
+							label={$i18n.t('Tika Server Version')}
+							description={$i18n.t('Select the Tika server API version.')}
+						>
+							<SettingsSelect bind:value={RAGConfig.TIKA_SERVER_VERSION}>
+								<option value="3">{$i18n.t('Tika 3.x')}</option>
+								<option value="4">{$i18n.t('Tika 4.x')}</option>
+							</SettingsSelect>
+						</AdminSettingField>
+					</div>
 				{:else if RAGConfig.CONTENT_EXTRACTION_ENGINE === 'docling'}
 					<div class="grid grid-cols-1 gap-x-3 gap-y-2.5 sm:grid-cols-2">
 						<AdminSettingField