diff --git a/services/mcp/src/bugbug_mcp/server.py b/services/mcp/src/bugbug_mcp/server.py
index a5179ee7ff..a20d631098 100644
--- a/services/mcp/src/bugbug_mcp/server.py
+++ b/services/mcp/src/bugbug_mcp/server.py
@@ -21,6 +21,10 @@
 
 mcp = FastMCP("Firefox Development MCP Server")
 
+# Temporarily disabled due to https://github.com/mozilla/bugbug/issues/5890.
+# Once that issue is resolved, we should re-enable the Bugzilla search tool.
+mcp.disable(names={"bugzilla_quick_search"})
+
 
 @functools.cache
 def get_code_review_tool():
diff --git a/services/mcp/tests/test_bugzilla_tools.py b/services/mcp/tests/test_bugzilla_tools.py
index e1dab02846..9bf649965c 100644
--- a/services/mcp/tests/test_bugzilla_tools.py
+++ b/services/mcp/tests/test_bugzilla_tools.py
@@ -42,6 +42,10 @@ def mock_get_data():
     return mock_bugzilla_class
 
 
+@pytest.mark.skip(
+    reason="bugzilla_quick_search tool is temporarily disabled due to "
+    "https://github.com/mozilla/bugbug/issues/5890"
+)
 class TestBugzillaQuickSearch:
     """Test the bugzilla_quick_search tool."""