diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index d487d16..c02c483 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.0.3
+current_version = 0.0.4-dev
 commit = True
 tag = False
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(?:-(?P<release>[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+(?P<build>[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?
diff --git a/CITATION.cff b/CITATION.cff
index eaa254b..6875b5d 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -3,6 +3,6 @@ message: "If you use this software, please cite it as below."
 title: "Biolexica"
 authors:
   - name: "Charles Tapley Hoyt"
-version: 0.0.3
+version: 0.0.4-dev
 doi:
 url: "https://github.com/biopragmatics/biolexica"
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 9a92413..b8eb429 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -27,7 +27,7 @@
 author = "Charles Tapley Hoyt"
 
 # The full version, including alpha/beta/rc tags.
-release = "0.0.3"
+release = "0.0.4-dev"
 
 # The short X.Y version.
 parsed_version = re.match(
diff --git a/setup.cfg b/setup.cfg
index ffa4f3f..0903a3f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,7 +3,7 @@
 ##########################
 [metadata]
 name = biolexica
-version = 0.0.3
+version = 0.0.4-dev
 description = Generate and apply coherent biomedical lexica
 long_description = file: README.md
 long_description_content_type = text/markdown
diff --git a/src/biolexica/version.py b/src/biolexica/version.py
index 55f17e2..5e3cc7d 100644
--- a/src/biolexica/version.py
+++ b/src/biolexica/version.py
@@ -14,7 +14,7 @@
     "get_git_hash",
 ]
 
-VERSION = "0.0.3"
+VERSION = "0.0.4-dev"
 
 
 def get_git_hash() -> str: