diff --git a/codes.yaml b/codes.yaml
index ca80c1e..1c90b9b 100644
--- a/codes.yaml
+++ b/codes.yaml
@@ -5,8 +5,9 @@ YAMBO:
     metadata:
         description: |
             A FORTRAN/C code for Many-Body calculations in solid state and molecular physics.
-        documentation_url: https://www.yambo-code.eu/wiki/index.php/Main_Page
         title: Yambo
+        homepage_url: https://www.yambo-code.eu
+        documentation_url: https://www.yambo-code.eu/wiki/index.php/Main_Page
         sourcecode_url: https://github.com/yambo-code/yambo.git
         logo: https://fresh.yambo-code.eu/wp-content/uploads/2023/02/yambo_logo_overlay.svg
 
@@ -16,6 +17,7 @@ Quantum ESPRESSO:
     metadata:
         description: |
             Quantum ESPRESSO is an integrated suite of open-source computer codes for quantum simulations of materials using state-of-the art electronic-structure techniques, based on density-functional theory, density-functional perturbation theory, and many-body perturbation theory, within the plane-wave pseudo-potential and projector-augmented-wave approaches
+        homepage_url: https://www.quantum-espresso.org
         sourcecode_url: https://gitlab.com/QEF/q-e
         documentation_url: https://www.quantum-espresso.org/documentation/
         title: Quantum ESPRESSO
@@ -61,9 +63,10 @@ pythtb:
     metadata:
         description: |
             Simple solver for tight binding models for use in condensed matter physics and materials science.
-        sourcecode_url: https://pypi.org/project/pythtb/
-        documentation_url: https://www.physics.rutgers.edu/pythtb/usage.html#pythtb.w90
         title: PythTB
+        homepage_url: https://www.physics.rutgers.edu/pythtb/
+        documentation_url: https://www.physics.rutgers.edu/pythtb/usage.html#pythtb.w90
+        sourcecode_url: https://pypi.org/project/pythtb/
         logo: https://www.physics.rutgers.edu/pythtb/_images/graphene.png
 
 tbmodels:
@@ -73,9 +76,10 @@ tbmodels:
     metadata:
         description: |
             Bmodels is a Python package for evaluating tight-binding models. It features methods for reading and writing tight-binding models to various formats, and evaluating the Hamiltonian and eigenvalues of the system. It is considerably faster than comparable packages, enabling it to handle first-principles derived tight-binding models.
+        title: TBmodels
+        homepage_url: https://tbmodels.greschd.ch
         sourcecode_url: https://github.com/Z2PackDev/TBmodels
         documentation_url: https://tbmodels.greschd.ch/en/latest/tutorial.html#id3
-        title: TBmodels
         logo: https://tbmodels.greschd.ch/en/latest/_images/tbmodels_logo.jpg
 
 z2pack:
@@ -84,6 +88,7 @@ z2pack:
     metadata:
         description: |
             Z2Pack automates the calculation of topological numbers of band-structures. It works with first-principles calculations (z2pack.fp), tight-binding models (z2pack.tb) and explicit Hamiltonian matrices (z2pack.hm).
+        homepage_url: https://z2pack.greschd.ch/
         sourcecode_url: https://github.com/Z2PackDev/Z2Pack
         documentation_url: https://z2pack.greschd.ch/
         title: Z2Pack
@@ -96,9 +101,10 @@ wanniertools:
     metadata:
         description: |
             An open-source software package for novel topological materials.
-        sourcecode_url: https://github.com/quanshengwu/wannier_tools
-        documentation_url: http://www.wanniertools.com/#
         title: WannierTools
+        sourcecode_url: https://github.com/quanshengwu/wannier_tools
+        homepage_url: http://www.wanniertools.com/
+        documentation_url: http://www.wanniertools.com/
         logo: https://github.com/quanshengwu/wannier_tools/raw/master/wt-logo.jpg
 
 wannierberri:
@@ -123,6 +129,7 @@ strawberrypy:
             StraWBerryPy (Single-poinT and local invaRiAnts for Wannier Berriologies in Python) is a Python package to calculate topological invariants and quantum-geometrical quantities in non-crystalline topological insulators.
         sourcecode_url: https://github.com/strawberrypy-developers/strawberrypy
         documentation_url: https://strawberrypy.readthedocs.io/en/latest/
+        homepage_url: https://strawberrypy.readthedocs.io
         title: StraWBerryPy
         logo: https://strawberrypy.readthedocs.io/en/latest/_static/logo.png
 
diff --git a/src/code_registry/web.py b/src/code_registry/web.py
index ba7df79..cedb3bc 100644
--- a/src/code_registry/web.py
+++ b/src/code_registry/web.py
@@ -116,7 +116,14 @@ def build_from_config(config: Config):
     )
 
     # Generate the aggregated codes metadata registry.
-    codes_meta = generate_codes_meta(data=data, schema=None)  # schemas.codes_meta)
+    # NOTE: if you want to change the schema, you need to replace below once
+    # `schema=None`, then push on GitHub so the deploy GitHub action runs and
+    # deploy the schema on GitHub pages. At this point, the schema validation
+    # (that checks the JSONschema files online, i.e., the deployed ones on
+    # GitHub) will work again.
+    # Put back `schema=schemas.codes_meta`, test locally that it works, and
+    # then push to GitHub.
+    codes_meta = generate_codes_meta(data=data, schema=schemas.codes_meta)
 
     # Remove previous build (if present).