diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8716222..291af5f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,11 +7,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       name: Setup Python ${{ matrix.python-version }}
       with:
         python-version: ${{ matrix.python-version }}
@@ -33,8 +33,8 @@ jobs:
         python3 setup.py install
         mkdir -p /opt/csv2bufr
         cd /opt/csv2bufr
-        wget https://github.com/wmo-im/csv2bufr-templates/archive/refs/tags/v0.1.tar.gz
-        tar -zxf v0.1.tar.gz --strip-components=1 csv2bufr-templates-0.1/templates
+        wget https://github.com/wmo-im/csv2bufr-templates/archive/refs/tags/v0.2.tar.gz
+        tar -zxf v0.2.tar.gz --strip-components=1 csv2bufr-templates-0.2/templates
     - name: run tests ⚙️
       run: |
         pytest
diff --git a/csv2bufr/__init__.py b/csv2bufr/__init__.py
index 4880bca..0e08263 100644
--- a/csv2bufr/__init__.py
+++ b/csv2bufr/__init__.py
@@ -513,9 +513,13 @@ def as_bufr(self, use_cached: bool = False) -> bytes:
         # set delayed replications, this is needed again as we only used it the
         # first time to set the keys
         if len(self.delayed_replications) > 0:
-            codes_set_array(bufr_msg,
-                            "inputDelayedDescriptorReplicationFactor",
-                            self.delayed_replications)
+            try:
+                codes_set_array(bufr_msg,
+                                "inputDelayedDescriptorReplicationFactor",
+                                self.delayed_replications)
+            except Exception as e:
+                msg = f"Error ({e}) setting inputDelayedDescriptorReplicationFactor"  # noqa
+                raise RuntimeError(msg)
         # ============================
         # iterate over keys and encode
         # ============================
@@ -973,6 +977,6 @@ def transform(data: str, mappings: dict) -> Iterator[dict]:
         # now yield result back to caller
         yield result
         # clear warnings
-        del _warnings_global[job_id]
+        _warnings_global[job_id] = []
 
     fh.close()
diff --git a/csv2bufr/templates/__init__.py b/csv2bufr/templates/__init__.py
index 1265e6b..fe7c077 100644
--- a/csv2bufr/templates/__init__.py
+++ b/csv2bufr/templates/__init__.py
@@ -88,8 +88,6 @@ def load_template(template_name: str) -> Union[dict, None]:
     fname = None
     error_flag = False
     if template_name not in TEMPLATES:
-        msg = f"Requested template {template_name} not found, " +\
-              "searching by file name"
         for _template in TEMPLATES.values():
             if template_name == _template.get('name'):
                 fname = _template.get('path')
diff --git a/requirements.txt b/requirements.txt
index f36f3f5..2107540 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
-numpy==1.21.6
 click
 eccodes
 jsonschema