diff --git a/bin/.travis/prepare_unittest.sh b/bin/.travis/prepare_unittest.sh
index 881d3b9001e..5f5085acd0f 100755
--- a/bin/.travis/prepare_unittest.sh
+++ b/bin/.travis/prepare_unittest.sh
@@ -35,7 +35,7 @@ COMPOSER_UPDATE=""
 # solr package search API integration tests
 if [ "$TEST_CONFIG" = "phpunit-integration-legacy-solr.xml" ] ; then
     echo "> Require ezsystems/ezplatform-solr-search-engine:dev-master"
-    composer require --no-update ezsystems/ezplatform-solr-search-engine:dev-master
+    composer require --no-update ezsystems/ezplatform-solr-search-engine:^1.0.0@dev
     COMPOSER_UPDATE="true"
 fi