diff --git a/openbabel/meta.yaml b/openbabel/meta.yaml
index da6254c..165bc30 100644
--- a/openbabel/meta.yaml
+++ b/openbabel/meta.yaml
@@ -44,6 +44,8 @@ requirements:
         - libxml2
         - cairo [unix]
 test:
+  source_files:
+    - '*'
   imports:
     - openbabel
     - pybel
diff --git a/pydot/meta.yaml b/pydot/meta.yaml
index 8495f62..b0bfa17 100644
--- a/pydot/meta.yaml
+++ b/pydot/meta.yaml
@@ -17,6 +17,8 @@ requirements:
     - python
 
 test:
+  source_files:
+    - '*'
   imports:
     - pydot
 
diff --git a/scoop/meta.yaml b/scoop/meta.yaml
index 80cdc3d..05daca6 100644
--- a/scoop/meta.yaml
+++ b/scoop/meta.yaml
@@ -18,6 +18,8 @@ requirements:
     - python
 
 test:
+  source_files:
+    - '*'
   imports:
     - scoop