diff --git a/.github/workflows/branch-test-others.yml b/.github/workflows/branch-test-others.yml
index 6281a0e..539c0ed 100644
--- a/.github/workflows/branch-test-others.yml
+++ b/.github/workflows/branch-test-others.yml
@@ -17,6 +17,7 @@ defaults:
 
 env:
   PIP_DISABLE_PIP_VERSION_CHECK: 1
+  LOCK_SUFFIX: ${{ vars.DRAINSWAMP_SET_LOCK == '1' && '.lock' || '.unlock' }}
 
 permissions:
   contents: read
@@ -61,7 +62,7 @@ jobs:
       - name: "Install dependencies"
         run: |
           set -xe
-          python -m pip install -r requirements/tox.pip
+          python -m pip install -r requirements/tox$LOCK_SUFFIX
 
       - name: "Run tox for ${{ matrix.python-version }}"
         run: |
diff --git a/CHANGES.rst b/CHANGES.rst
index 72bb6cf..f91ee04 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -42,6 +42,7 @@ Changelog
    Commit items for NEXT VERSION
    ..............................
 
+   - ci(branch-test-others): fix requirement file suffix
    - fix(cli_igor): seed changelog add check file not found and missing start token
 
 .. scriv-start-here
diff --git a/src/drain_swamp/_version.py b/src/drain_swamp/_version.py
index a6f48ab..dff3a3c 100644
--- a/src/drain_swamp/_version.py
+++ b/src/drain_swamp/_version.py
@@ -12,5 +12,5 @@
 __version_tuple__: VERSION_TUPLE
 version_tuple: VERSION_TUPLE
 
-__version__ = version = '1.6.3.dev0'
-__version_tuple__ = version_tuple = (1, 6, 3, "dev0", "gfbc1800.d20240831")
+__version__ = version = '1.6.3.dev1'
+__version_tuple__ = version_tuple = (1, 6, 3, "dev1", "g608d812.d20240831")