diff --git a/tasks/main.yml b/tasks/main.yml
index 5375eba..43c6212 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -7,6 +7,7 @@
 
 - name: install source file if not exist
   git:
+      accept_hostkey: yes
       dest: "/tmp/{{name}}" # required. The path of where the repository should be checked out. This parameter is required, unless C(clone) is set to C(no).
       repo: "{{chainetv_repo}}" # required. git, SSH, or HTTP(S) protocol address of the git repository.
       clone: yes # not required. If C(no), do not clone the repository if it does not exist locally