diff --git a/.github/workflows/nightly-ubuntu-ci.yml b/.github/workflows/nightly-ubuntu-ci.yml
index 9d42445..8dfeaa2 100644
--- a/.github/workflows/nightly-ubuntu-ci.yml
+++ b/.github/workflows/nightly-ubuntu-ci.yml
@@ -14,7 +14,7 @@ jobs:
     with:
       custom_version_build: 'v2'
       dependencies_artifact_postfix: '_nightly'
-      ref: '2.x'
+      ref: '1.x'
     secrets: inherit
 
   reusable_tests_v3:
diff --git a/.github/workflows/nightly-windows-ci.yml b/.github/workflows/nightly-windows-ci.yml
index fb005d5..f29c75d 100644
--- a/.github/workflows/nightly-windows-ci.yml
+++ b/.github/workflows/nightly-windows-ci.yml
@@ -14,7 +14,7 @@ jobs:
     with:
       custom_version_build: 'v2'
       dependencies_artifact_postfix: '_nightly'
-      ref: '2.x'
+      ref: '1.x'
     secrets: inherit
 
   reusable_tests_v3: