diff --git a/package/opencv3/opencv3.hash b/package/opencv3/opencv3.hash
new file mode 100644
index 0000000000..20859ea2b5
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+++ b/package/opencv3/opencv3.hash
@@ -0,0 +1,2 @@
+# Locally calculated
+sha256 f00b3c4f42acda07d89031a2ebb5ebe390764a133502c03a511f67b78bbd4fbf  opencv3-3.1.0.tar.gz