diff --git a/tox.ini b/tox.ini
index fbdec1f..2cde53b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ envlist =
 deps =
     -rcpt/requirements_test.txt
     tabulate
-    conan-latest: conan
+    conan-latest: conan>=1.64.1 ,<2
     conan-dev: https://github.com/conan-io/conan/archive/develop.tar.gz
 
 setenv =