diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 87b81c3..6fedf56 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -84,7 +84,7 @@ jobs:
 
       - run: |
           mk python-release owner=libre-embedded \
-                            repo=ifgen version=4.6.0
+                            repo=ifgen version=4.6.1
         if: |
           matrix.python-version == '3.13'
           && matrix.system == 'ubuntu-latest'
diff --git a/README.md b/README.md
index 0f0cab5..61bd42f 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,11 @@
     =====================================
     generator=datazen
     version=3.2.3
-    hash=8d3c526a8528a19206c3cbb830964859
+    hash=b1734afc9a17480fd92d42eb65e351f9
     =====================================
 -->
 
-# ifgen ([4.6.0](https://pypi.org/project/ifgen/))
+# ifgen ([4.6.1](https://pypi.org/project/ifgen/))
 
 [![python](https://img.shields.io/pypi/pyversions/ifgen.svg)](https://pypi.org/project/ifgen/)
 ![Build Status](https://github.com/libre-embedded/ifgen/workflows/Python%20Package/badge.svg)
diff --git a/config b/config
index 6f91c48..2549d1a 160000
--- a/config
+++ b/config
@@ -1 +1 @@
-Subproject commit 6f91c48419d283105f397af4d718d7afb27937ba
+Subproject commit 2549d1a7a11cbf4ac73dbfc66307c4a920531832
diff --git a/ifgen/__init__.py b/ifgen/__init__.py
index c60bbfb..87390a7 100644
--- a/ifgen/__init__.py
+++ b/ifgen/__init__.py
@@ -1,7 +1,7 @@
 # =====================================
 # generator=datazen
 # version=3.2.3
-# hash=1d9a445cd0a6b0e0126151d1aa677943
+# hash=940874292201d38dfaaf344ff5181488
 # =====================================
 
 """
@@ -10,4 +10,4 @@
 
 DESCRIPTION = "An interface generator for distributed computing."
 PKG_NAME = "ifgen"
-VERSION = "4.6.0"
+VERSION = "4.6.1"
diff --git a/ifgen/config/__init__.py b/ifgen/config/__init__.py
index fb72410..7952ae0 100644
--- a/ifgen/config/__init__.py
+++ b/ifgen/config/__init__.py
@@ -44,6 +44,7 @@ def init(self, data: _JsonObject) -> None:
             "stream",
             "methods",
             "default_endianness",
+            "packed",
         ]
         struct: dict[str, Any]
         for struct in data.get("structs", {}).values():  # type: ignore
diff --git a/ifgen/data/schemas/Config.yaml b/ifgen/data/schemas/Config.yaml
index e64938c..ea6e839 100644
--- a/ifgen/data/schemas/Config.yaml
+++ b/ifgen/data/schemas/Config.yaml
@@ -79,6 +79,9 @@ properties:
       unit_test:
         type: boolean
         default: true
+      packed:
+        type: boolean
+        default: true
 
       # https://en.cppreference.com/w/cpp/types/endian
       default_endianness:
diff --git a/ifgen/data/schemas/Struct.yaml b/ifgen/data/schemas/Struct.yaml
index 9e3e6c4..e843bf1 100644
--- a/ifgen/data/schemas/Struct.yaml
+++ b/ifgen/data/schemas/Struct.yaml
@@ -19,6 +19,8 @@ properties:
     type: boolean
   unit_test:
     type: boolean
+  packed:
+    type: boolean
   default_endianness:
     type: string
     enum: [little, big, native]
diff --git a/ifgen/struct/header.py b/ifgen/struct/header.py
index f7035ef..c4a315e 100644
--- a/ifgen/struct/header.py
+++ b/ifgen/struct/header.py
@@ -164,8 +164,10 @@ def struct_instance(
 def cpp_struct_header(task: GenerateTask, writer: IndentedFileWriter) -> None:
     """Create the contents of a C++ struct header file."""
 
-    attributes = ["gnu::packed"]
-    writer.write(f"struct [[{', '.join(attributes)}]] {task.name}")
+    attributes = ["gnu::packed"] if task.instance["packed"] else None
+    attribute_str = f"[[{', '.join(attributes)}]]" if attributes else ""
+    writer.write(f"struct {attribute_str} {task.name}")
+
     with writer.scope(suffix=";"):
         writer.c_comment("Constant attributes.")
         with writer.trailing_comment_lines(
diff --git a/ifgen/svd/task.py b/ifgen/svd/task.py
index fc13bec..8ee880b 100644
--- a/ifgen/svd/task.py
+++ b/ifgen/svd/task.py
@@ -110,6 +110,7 @@ def generate_configs(self, path: Path, config: SvdConfig) -> None:
                     "codec": False,
                     "methods": False,
                     "unit_test": False,
+                    "packed": False,
                 },
                 "enum": {"use_map": False, "identifier": False},
             },
diff --git a/local/variables/package.yaml b/local/variables/package.yaml
index 579572f..de89c0f 100644
--- a/local/variables/package.yaml
+++ b/local/variables/package.yaml
@@ -1,5 +1,5 @@
 ---
 major: 4
 minor: 6
-patch: 0
+patch: 1
 entry: ig
diff --git a/pyproject.toml b/pyproject.toml
index 5687a28..4389113 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta:__legacy__"
 
 [project]
 name = "ifgen"
-version = "4.6.0"
+version = "4.6.1"
 description = "An interface generator for distributed computing."
 readme = "README.md"
 requires-python = ">=3.12"