diff --git a/ska_conda/pkg_defs/ska3-core/meta.yaml b/ska_conda/pkg_defs/ska3-core/meta.yaml
index 61403be4..23a45548 100644
--- a/ska_conda/pkg_defs/ska3-core/meta.yaml
+++ b/ska_conda/pkg_defs/ska3-core/meta.yaml
@@ -2,6 +2,9 @@ package:
   name: ska3-core
   version: 0.1
 
+build:
+  noarch: generic
+
 requirements:
   # Packages required to run the package. These are the dependencies that
   # will be installed automatically whenever the package is installed.
diff --git a/ska_conda/pkg_defs/ska3-dev/meta.yaml b/ska_conda/pkg_defs/ska3-dev/meta.yaml
index bc40e948..91091c18 100644
--- a/ska_conda/pkg_defs/ska3-dev/meta.yaml
+++ b/ska_conda/pkg_defs/ska3-dev/meta.yaml
@@ -2,6 +2,9 @@ package:
   name: ska3-dev
   version: 0.1
 
+build:
+  noarch: generic
+
 requirements:
   # Packages required to run the package. These are the dependencies that
   # will be installed automatically whenever the package is installed.
diff --git a/ska_conda/pkg_defs/ska3-flight/meta.yaml b/ska_conda/pkg_defs/ska3-flight/meta.yaml
index 2fae1094..73aed7a9 100644
--- a/ska_conda/pkg_defs/ska3-flight/meta.yaml
+++ b/ska_conda/pkg_defs/ska3-flight/meta.yaml
@@ -2,6 +2,9 @@ package:
   name: ska3-flight
   version: 0.1
 
+build:
+  noarch: generic
+
 requirements:
   # Packages required to run the package. These are the dependencies that
   # will be installed automatically whenever the package is installed.
diff --git a/ska_conda/pkg_defs/ska3-pinned/meta.yaml b/ska_conda/pkg_defs/ska3-pinned/meta.yaml
index 33c114ff..92a1bff3 100644
--- a/ska_conda/pkg_defs/ska3-pinned/meta.yaml
+++ b/ska_conda/pkg_defs/ska3-pinned/meta.yaml
@@ -2,6 +2,9 @@ package:
   name: ska3-pinned
   version: 0.1
 
+build:
+  noarch: generic
+
 requirements:
   # Packages required to run the package. These are the dependencies that
   # will be installed automatically whenever the package is installed.
diff --git a/ska_conda/pkg_defs/ska3-template/meta.yaml b/ska_conda/pkg_defs/ska3-template/meta.yaml
index eb7131a8..34e1ca67 100644
--- a/ska_conda/pkg_defs/ska3-template/meta.yaml
+++ b/ska_conda/pkg_defs/ska3-template/meta.yaml
@@ -2,8 +2,5 @@ package:
   name: ska3-template
   version:  0.1
 
-requirements:
-  build:
-    - python
-  run:
-    - python
+build:
+  noarch: generic
diff --git a/ska_conda/pkg_defs/ska3_builder/meta.yaml b/ska_conda/pkg_defs/ska3_builder/meta.yaml
index c321f4f8..2170a49e 100644
--- a/ska_conda/pkg_defs/ska3_builder/meta.yaml
+++ b/ska_conda/pkg_defs/ska3_builder/meta.yaml
@@ -3,6 +3,7 @@ package:
   version: {{ GIT_DESCRIBE_TAG }}
 
 build:
+  noarch: python
   script_env:
     - SKA_TOP_SRC_DIR