diff --git a/examples/data/cow_tutorial/Tutorial.ipynb b/examples/data/cow_tutorial/Tutorial.ipynb
index fb70ad4d7db1fce92399b931045b1e04d90da826..9dbade1a5ddb41ed4af5493339b955a092c25d74 100644
--- a/examples/data/cow_tutorial/Tutorial.ipynb
+++ b/examples/data/cow_tutorial/Tutorial.ipynb
@@ -303,7 +303,7 @@
     "\n",
     "\n",
     "class Timeseries(MSection):\n",
-    "    year = Quantity(type=np.int, shape=['*'])\n",
+    "    year = Quantity(type=np.int32, shape=['*'])\n",
     "    value = Quantity(type=np.float64, shape=['*'])"
    ]
   },
@@ -959,7 +959,7 @@
     "\n",
     "\n",
     "class Timeseries(MSection):\n",
-    "    year = Quantity(type=np.int, shape=['*'])\n",
+    "    year = Quantity(type=np.int32, shape=['*'])\n",
     "    value = Quantity(type=np.float64, shape=['*'])\n",
     "\n",
     "\n",
diff --git a/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/parsers/country.py b/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/parsers/country.py
index 735da39023e0314ff34489f6645f461d5afea21d..1fb09907c2024671390bead669678a911d82859e 100644
--- a/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/parsers/country.py
+++ b/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/parsers/country.py
@@ -70,6 +70,6 @@ class CountryParser(MatchingParser):
             return None
 
         return Timeseries(
-            year=[year for year, _ in data[indicator]],
-            value=[value for _, value in data[indicator]],
+            year=[int(year) for year, _ in data[indicator]],
+            value=[float(value) for _, value in data[indicator]],
         )
diff --git a/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/schema_packages/country.py b/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/schema_packages/country.py
index ed76486137b8c5d2f2bd47ca7c07950603da5008..bcc04bda9d3227c88b958b7d525f8591a3cc5dd8 100644
--- a/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/schema_packages/country.py
+++ b/examples/data/cow_tutorial/nomad-countries/src/nomad_countries/schema_packages/country.py
@@ -9,7 +9,7 @@ m_package = Package(name='Countries of the World')
 
 
 class Timeseries(MSection):
-    year = Quantity(type=np.int, shape=['*'])
+    year = Quantity(type=np.int32, shape=['*'])
     value = Quantity(type=np.float64, shape=['*'])