diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f6826d..50a6714 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v0.9.31 (2026-02-18)
+
+### Fix
+
+- **taxon**: correct realm rank mapping to sup_kin
+
 ## v0.9.30 (2026-02-18)
 
 ### Fix
diff --git a/README.md b/README.md
index 2d9de72..0ea1ac1 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Strain Authentication and Identification Methods - saim
 
-[![release: 0.9.30](https://img.shields.io/badge/rel-0.9.30-blue.svg?style=flat-square)](https://github.com/LeibnizDSMZ/saim.git)
+[![release: 0.9.31](https://img.shields.io/badge/rel-0.9.31-blue.svg?style=flat-square)](https://github.com/LeibnizDSMZ/saim.git)
 [![MIT LICENSE](https://img.shields.io/badge/License-MIT-brightgreen.svg?style=flat-square)](https://choosealicense.com/licenses/mit/)
 [![Documentation Status](https://img.shields.io/badge/docs-GitHub-blue.svg?style=flat-square)](https://LeibnizDSMZ.github.io/saim/)
 
diff --git a/pyproject.toml b/pyproject.toml
index 7d9ef90..3c60f8b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "saim"
-version = "0.9.30"
+version = "0.9.31"
 description = """A library for identifying strains."""
 readme = "README.md"
 authors = [
diff --git a/src/saim/shared/data_con/taxon.py b/src/saim/shared/data_con/taxon.py
index 92f729b..a5b1f12 100644
--- a/src/saim/shared/data_con/taxon.py
+++ b/src/saim/shared/data_con/taxon.py
@@ -191,7 +191,7 @@ class GBIFRanksE(str, Enum):
     "BIOTYPE": GBIFRanksE.oth,
     "CLADE": GBIFRanksE.oth,
     "NO RANK": GBIFRanksE.unr,
-    "REALM": GBIFRanksE.dom,
+    "REALM": GBIFRanksE.sup_kin,
     "ACELLULAR ROOT": GBIFRanksE.dom,
     "CELLULAR ROOT": GBIFRanksE.unr,
 }
diff --git a/src/saim/shared/misc/constants.py b/src/saim/shared/misc/constants.py
index 31aa5c2..b9a8cd2 100644
--- a/src/saim/shared/misc/constants.py
+++ b/src/saim/shared/misc/constants.py
@@ -2,4 +2,4 @@
 
 
 ENCODING: Final[str] = "utf-8"
-VERSION: Final[str] = "v0.9.30"
+VERSION: Final[str] = "v0.9.31"
diff --git a/uv.lock b/uv.lock
index a906e5c..fd893dc 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1257,7 +1257,7 @@ wheels = [
 
 [[package]]
 name = "saim"
-version = "0.9.30"
+version = "0.9.31"
 source = { editable = "." }
 dependencies = [
     { name = "cafi" },