diff --git a/src/primingprob/__init__.py b/src/primingprob/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..46fb5934542d5cc3171477c1b3bc135ada4df0ab
--- /dev/null
+++ b/src/primingprob/__init__.py
@@ -0,0 +1,3 @@
+"""Placeholder package."""
+
+__version__ = '0.0.0'