diff --git a/.appveyor.yml b/.appveyor.yml
index c48f3687b..bf1478315 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -66,7 +66,7 @@ matrix:
 #---------------------------------#
 
 install:
-  - cmd: git submodule update --init --recursive --depth 10
+  - cmd: git submodule update --init --recursive --depth=50
   - cmd: .ci/appveyor-prepare.bat
 
 build_script: