diff --git a/ska_conda/build_order.txt b/ska_conda/build_order.txt
index a5346264..dffc030e 100644
--- a/ska_conda/build_order.txt
+++ b/ska_conda/build_order.txt
@@ -1,3 +1,9 @@
+pytest-arraydiff
+pytest-doctestplus
+pytest-openfiles
+pytest-remotedata
+pytest-astropy
+astropy
 Ska.Shell
 Ska.File
 pyyaks
diff --git a/ska_conda/ska_builder.py b/ska_conda/ska_builder.py
index 412e41f1..929decb5 100644
--- a/ska_conda/ska_builder.py
+++ b/ska_conda/ska_builder.py
@@ -6,7 +6,9 @@
 ska_conda_path = os.path.abspath(os.path.dirname(__file__))
 pkg_defs_path = os.path.join(ska_conda_path, "pkg_defs")
 build_list = os.path.join(ska_conda_path, "build_order.txt")
-no_source_pkgs = ['ska3-flight', 'ska3-core', 'ska3-dev', 'ska3-pinned', 'ska3-template']
+no_source_pkgs = ['ska3-flight', 'ska3-core', 'ska3-dev', 'ska3-pinned', 'ska3-template',
+                  'pytest-arraydiff', 'pytest-doctestplus', 'pytest-openfiles', 'pytest-remotedata',
+                  'pytest-astropy', 'astropy']
 
 class SkaBuilder(object):