diff --git a/bidscoin/heuristics/bidsmap_dccn.yaml b/bidscoin/heuristics/bidsmap_dccn.yaml
index 5683a650..96bd894b 100644
--- a/bidscoin/heuristics/bidsmap_dccn.yaml
+++ b/bidscoin/heuristics/bidsmap_dccn.yaml
@@ -22,7 +22,7 @@ Options:
 # General options and plugins
 # --------------------------------------------------------------------------------
   bidscoin:
-    version: 4.1.0                  # BIDScoin version (should correspond with the version in pyproject.toml)
+    version: 4.2.0-alpha                  # BIDScoin version (should correspond with the version in pyproject.toml)
     bidsignore: mrs/;extra_data/;sub-*_ct.*    # Semicolon-separated list of entries that are added to the .bidsignore file (for more info, see BIDS specifications), e.g. extra_data/;pet/;myfile.txt;yourfile.csv
     subprefix: sub-                 # The subject prefix of the source data
     sesprefix: ses-                 # The session prefix of the source data
diff --git a/bidscoin/heuristics/bidsmap_sst.yaml b/bidscoin/heuristics/bidsmap_sst.yaml
index 2f38ff57..b5fdb021 100644
--- a/bidscoin/heuristics/bidsmap_sst.yaml
+++ b/bidscoin/heuristics/bidsmap_sst.yaml
@@ -21,7 +21,7 @@ Options:
 # General options and plugins
 # --------------------------------------------------------------------------------
   bidscoin:
-    version: 4.1.0                  # BIDScoin version (should correspond with the version in pyproject.toml)
+    version: 4.2.0-alpha                  # BIDScoin version (should correspond with the version in pyproject.toml)
     bidsignore: mrs/;extra_data/    # Semicolon-separated list of entries that are added to the .bidsignore file (for more info, see BIDS specifications), e.g. extra_data/;pet/;myfile.txt;yourfile.csv
     subprefix: sub-                 # The subject prefix of the source data
     sesprefix: ses-                 # The session prefix of the source data
diff --git a/pyproject.toml b/pyproject.toml
index b694c3a7..be1d4af8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ build-backend    = 'setuptools.build_meta'
 [project]
 name             = 'bidscoin'
 description      = 'Converts and organises raw MRI data-sets according to the Brain Imaging Data Structure (BIDS)'
-version          = '4.1.0'
+version          = '4.2.0-alpha'
 readme           = 'README.rst'
 requires-python  = '>= 3.8'
 license          = {file = 'LICENSE.txt'}
diff --git a/tests/test_data/bidsmap.yaml b/tests/test_data/bidsmap.yaml
index 05fa6838..fdf31246 100644
--- a/tests/test_data/bidsmap.yaml
+++ b/tests/test_data/bidsmap.yaml
@@ -20,7 +20,7 @@ Options:
 # General options and plugins
 # --------------------------------------------------------------------------------
   bidscoin:
-    version: 4.1.0                  # BIDScoin version (should correspond with the version in pyproject.toml)
+    version: 4.2.0-alpha                  # BIDScoin version (should correspond with the version in pyproject.toml)
     bidsignore: mrs/;extra_data/    # Semicolon-separated list of entries that are added to the .bidsignore file (for more info, see BIDS specifications), e.g. extra_data/;pet/;myfile.txt;yourfile.csv
     subprefix: sub-                 # The subject prefix of the source data
     sesprefix: ses-                 # The session prefix of the source data