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diff --git a/README.md b/README.md
index 0ad027c..9f8be03 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,9 @@ Now you should be ready to try butido. butido takes `--help` in every subcommand
 to explain what it does.
 
 
+Butido is built and tested with Rust 1.50.0 as MSRV.
+
+
 ### Glossary
 
 | Word        | Explanation                                                                                                      |