diff --git a/.github/workflows/upload_to_dockerhub.yml b/.github/workflows/upload_to_dockerhub.yml
index 20601a88..60d1d674 100644
--- a/.github/workflows/upload_to_dockerhub.yml
+++ b/.github/workflows/upload_to_dockerhub.yml
@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - bump-debian-version
     tags:
       - '*'
 
diff --git a/Dockerfile.base b/Dockerfile.base
index 06b72382..cc022cee 100644
--- a/Dockerfile.base
+++ b/Dockerfile.base
@@ -1,5 +1,5 @@
 # Use the latest Debian image
-FROM debian:bookworm-slim
+FROM debian:trixie-slim
 
 # Set environment variables to avoid interactive prompts during package installation
 ENV DEBIAN_FRONTEND=noninteractive
diff --git a/python/extpar_cru_to_buffer.py b/python/extpar_cru_to_buffer.py
index e6e8920a..f2b0dc42 100755
--- a/python/extpar_cru_to_buffer.py
+++ b/python/extpar_cru_to_buffer.py
@@ -210,7 +210,7 @@
                  f'extract HSURF from {raw_data_tclim_fine} '
                  f'--> {step2_cdo}')
 
-    utils.launch_shell('cdo', lock, '-f', 'nc4', '-P', omp, '-selname,HSURF,',
+    utils.launch_shell('cdo', lock, '-f', 'nc4', '-P', omp, '-selname,HSURF',
                        raw_data_tclim_fine, step2_cdo)
 
     logging.info('STEP 3: '
diff --git a/python/extpar_emiss_to_buffer.py b/python/extpar_emiss_to_buffer.py
index 22f563e7..01b1cd50 100755
--- a/python/extpar_emiss_to_buffer.py
+++ b/python/extpar_emiss_to_buffer.py
@@ -201,9 +201,10 @@
 emiss_mrat = np.empty((12, ke_tot, je_tot, ie_tot), dtype=mrat_meta.type)
 
 for t in np.arange(12):
-    emiss_mrat[t, :, :, :] = np.divide(emiss[t, :, :, :],
-                                       emiss_max[:, :, :],
-                                       where=emiss_max[:, :, :] != 0.0)
+    np.divide(emiss[t, :, :, :],
+              emiss_max[:, :, :],
+              out=emiss_mrat[t, :, :, :],
+              where=emiss_max[:, :, :] != 0.0)
     emiss_mrat[t, :, :, :] = np.where(emiss_max[:, :, :] <= 0.0, -1.0,
                                       emiss_mrat[t, :, :, :])
 
diff --git a/python/extpar_ndvi_to_buffer.py b/python/extpar_ndvi_to_buffer.py
index fa04f6f2..fb775688 100755
--- a/python/extpar_ndvi_to_buffer.py
+++ b/python/extpar_ndvi_to_buffer.py
@@ -173,9 +173,10 @@
 ndvi_mrat = np.empty((12, ke_tot, je_tot, ie_tot), dtype=mrat_meta.type)
 
 for t in np.arange(12):
-    ndvi_mrat[t, :, :, :] = np.divide(ndvi[t, :, :, :],
-                                      ndvi_max[:, :, :],
-                                      where=ndvi_max[:, :, :] != 0.0)
+    np.divide(ndvi[t, :, :, :],
+              ndvi_max[:, :, :],
+              out=ndvi_mrat[t, :, :, :],
+              where=ndvi_max[:, :, :] != 0.0)
     ndvi_mrat[t, :, :, :] = np.where(ndvi_max[:, :, :] <= 0.0, -1.0,
                                      ndvi_mrat[t, :, :, :])