diff --git a/group_vars/all.yml.example b/group_vars/all.yml.example
index c5a784a..323b1af 100644
--- a/group_vars/all.yml.example
+++ b/group_vars/all.yml.example
@@ -71,6 +71,8 @@ key_name: "id_rsa.pub"
 #If this variable is set to "True" all the VMs will be rebooted after setup.
 reboot_after_completion: false
 
+"Path to spec.json file. If no file provided, spec.json will be downloaded from GitHub
+spec_json: ""
 
 ##Bootnode-related variables.
 
diff --git a/roles/preconf/defaults/main.yml b/roles/preconf/defaults/main.yml
index 5f263fa..c5be53e 100644
--- a/roles/preconf/defaults/main.yml
+++ b/roles/preconf/defaults/main.yml
@@ -7,4 +7,6 @@ home: "/home/{{ username }}"
 
 GENESIS_NETWORK_NAME: "PoA"
 MAIN_REPO_FETCH: "poanetwork"
-GENESIS_BRANCH: "master"
\ No newline at end of file
+GENESIS_BRANCH: "master"
+
+spec_json: ""
\ No newline at end of file
diff --git a/roles/preconf/tasks/spec.yml b/roles/preconf/tasks/spec.yml
index 172df18..bc42462 100644
--- a/roles/preconf/tasks/spec.yml
+++ b/roles/preconf/tasks/spec.yml
@@ -1,6 +1,11 @@
 ---
+- name: Copy spec.json to remote machine
+  copy: src={{ spec_json }} dest={{ home }}/ mode=0644 group={{ username }} owner={{ username }}
+  when: spec_json != ""
+
 - name: Download spec.json
   get_url: url={{ item }} dest={{ home }}/ mode=0644 group={{ username }} owner={{ username }}
   with_items:
     - "https://raw.githubusercontent.com/{{ MAIN_REPO_FETCH }}/poa-chain-spec/{{ GENESIS_BRANCH }}/spec.json"
-    - "https://raw.githubusercontent.com/{{ MAIN_REPO_FETCH }}/poa-chain-spec/{{ GENESIS_BRANCH }}/bootnodes.txt"
\ No newline at end of file
+    - "https://raw.githubusercontent.com/{{ MAIN_REPO_FETCH }}/poa-chain-spec/{{ GENESIS_BRANCH }}/bootnodes.txt"
+  when: spec_json == ""
\ No newline at end of file