diff --git a/requirements-dev.txt b/requirements-dev.txt
index 7e2b870..3b1b121 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -27,6 +27,8 @@ flask-cors==5.0.0
     # via -r requirements.txt
 gunicorn==23.0.0
     # via -r requirements.txt
+humps==0.2.2
+    # via -r requirements.txt
 itsdangerous==2.2.0
     # via
     #   -r requirements.txt
diff --git a/requirements.in b/requirements.in
index 286c929..3b9bdce 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,6 +1,7 @@
 Flask
 flask-cors
 gunicorn
+humps
 minizinc
 networkx
 pydantic
diff --git a/requirements.txt b/requirements.txt
index f59b9fb..b102860 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,8 @@ flask-cors==5.0.0
     # via -r requirements.in
 gunicorn==23.0.0
     # via -r requirements.in
+humps==0.2.2
+    # via -r requirements.in
 itsdangerous==2.2.0
     # via flask
 jinja2==3.1.6