diff --git a/.travis.yml b/.travis.yml
index 9998ba4c..877f00e2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,9 @@ dist: trusty
 # https://github.com/travis-ci/travis-ci/issues/9033
 sudo: required
 
+git:
+  depth: 50
+
 env:
   global:
     - CFLAGS='-g -pipe'
diff --git a/appveyor.yml b/appveyor.yml
index 5008fb42..692387b2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -36,6 +36,9 @@ init:
 # version format
 version: libexpat-{build}
 
+# set clone depth, clone entire repository history if not defined
+clone_depth: 50
+
 # clone directory
 clone_folder: c:\projects\libexpat