diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index ab6ae500..7760c16c 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 4.2.15
+current_version = 4.2.16
 tag = True
 commit = True
 
diff --git a/main.py b/main.py
index 66d6622a..3fee914c 100644
--- a/main.py
+++ b/main.py
@@ -14,7 +14,7 @@
 from routers import trisomy_21, turners, uk_who, utilities
 
 
-version='4.2.15'  # this is set by bump version
+version='4.2.16'  # this is set by bump version
 
 # Declare the FastAPI app
 app = FastAPI(
diff --git a/tests/test_data/test_openapi.json b/tests/test_data/test_openapi.json
index 76b8336e..85851a0e 100644
--- a/tests/test_data/test_openapi.json
+++ b/tests/test_data/test_openapi.json
@@ -3,7 +3,7 @@
     "info": {
         "title": "RCPCH Digital Growth API",
         "description": "Returns SDS and centiles for child growth measurements using growth references. Currently provides calculations based on the UK-WHO, Turner's Syndrome and Trisomy-21 references.",
-        "version": "4.2.15"
+        "version": "4.2.16"
     },
     "paths": {
         "/uk-who/calculation": {