diff --git a/studio/backend/plugins/data-designer-unstructured-seed/pyproject.toml b/studio/backend/plugins/data-designer-unstructured-seed/pyproject.toml
index d4770a0b05..c9d988bd9d 100644
--- a/studio/backend/plugins/data-designer-unstructured-seed/pyproject.toml
+++ b/studio/backend/plugins/data-designer-unstructured-seed/pyproject.toml
@@ -11,7 +11,7 @@ version = "0.1.0"
 description = "Local Data Designer unstructured seed reader plugin"
 requires-python = ">=3.11"
 dependencies = [
-  "data-designer-engine>=0.5.1,<0.6",
+  "data-designer-engine>=0.5.4,<0.6",
   "pandas>=2,<3",
   "pymupdf>=1.24.0",
   "pymupdf4llm>=0.0.17",
diff --git a/studio/backend/requirements/single-env/data-designer-deps.txt b/studio/backend/requirements/single-env/data-designer-deps.txt
index 9cd0db99e4..0cb42db01d 100644
--- a/studio/backend/requirements/single-env/data-designer-deps.txt
+++ b/studio/backend/requirements/single-env/data-designer-deps.txt
@@ -1,8 +1,10 @@
 # Data Designer runtime deps installed explicitly (single-env mode).
-# DuckDB 1.5 removed Relation.record_batch(); keep <1.5 until upstream ships the fix.
+# Synced with data-designer-engine==0.5.4 requirements.
 anyascii<1,>=0.3.3
-duckdb<1.5,>=1.1.3
+chardet<6,>=3.0.2
+duckdb<2,>=1.5.0
 faker<21,>=20.1.0
+fsspec<2026,>=2025.3.0
 httpx<1,>=0.27.2
 httpx-retries<1,>=0.4.2
 json-repair<1,>=0.48.0
@@ -10,12 +12,13 @@ jsonpath-rust-bindings<2,>=1.0
 jsonschema<5,>=4.0.0
 lxml<7,>=6.0.2
 marko<3,>=2.1.2
+mcp<2,>=1.26.0
 networkx<4,>=3.0
-python-json-logger<4,>=3
 ruff<1,>=0.14.10
 scipy<2,>=1.11.0
 sqlfluff<4,>=3.2.0
 tiktoken<1,>=0.8.0
+# Unstructured-seed plugin deps (plugin installed with --no-deps)
 pymupdf>=1.24.0
 pymupdf4llm>=0.0.17
 mammoth>=1.8.0
diff --git a/studio/backend/requirements/single-env/data-designer.txt b/studio/backend/requirements/single-env/data-designer.txt
index 8daa1eca43..2e0ba62249 100644
--- a/studio/backend/requirements/single-env/data-designer.txt
+++ b/studio/backend/requirements/single-env/data-designer.txt
@@ -1,5 +1,5 @@
 # Install Data Designer in same env as Unsloth.
-data-designer==0.5.2
-data-designer-config==0.5.2
-data-designer-engine==0.5.2
+data-designer==0.5.4
+data-designer-config==0.5.4
+data-designer-engine==0.5.4
 prompt-toolkit>=3,<4