diff --git a/everybeam/conda_build_config.yaml b/everybeam/conda_build_config.yaml
index af1d4f7..2bfaf85 100644
--- a/everybeam/conda_build_config.yaml
+++ b/everybeam/conda_build_config.yaml
@@ -1,16 +1,33 @@
 python:
   - 3.9
 
+# For reasons that are not entirely clear to me, conda build
+# constrains the cfitsio and hdf5 run dependencies to a specific patch.
+# Here, we make sure the boost / cfitsio / hdf5 combination that fits
+# the Karabo environment, 1.82 / 4.3.1 / 1.14.2, is built.
+# And we build more boost / cfitsio / hdf5 combinations, one for each
+# boost version that is compatible with this library and its dependencies.
 boost:
   - 1.74
   - 1.78
   - 1.82
   - 1.84
-
+cfitsio:
+  - 4.1.0
+  - 4.3.0
+  - 4.3.1
+  - 4.4.0
 hdf5:
+  - 1.12.1
+  - 1.14.1
   - 1.14.2
   - 1.14.3
+zip_keys:
+  - boost
+  - cfitsio
+  - hdf5
 
 pin_run_as_build:
   boost: x.x
+  cfitsio: x.x.x
   hdf5: x.x.x
diff --git a/everybeam/meta.yaml b/everybeam/meta.yaml
index 03fb3fa..551aea4 100644
--- a/everybeam/meta.yaml
+++ b/everybeam/meta.yaml
@@ -17,38 +17,38 @@ requirements:
     - cmake
     - make
     - boost
-    - hdf5
+    - casacore
+    - cfitsio
     - fftw
+    - hdf5
     - libblas
     - liblapack
     - libxml2
     - python
-    - casacore
-    - cfitsio
     - wcslib
 
   host:
     - boost
-    - hdf5
+    - casacore
+    - cfitsio
     - fftw
+    - hdf5
     - libblas
     - liblapack
     - libxml2
     - python
-    - casacore
-    - cfitsio
     - wcslib
   
   run:
     - boost
-    - hdf5
+    - casacore
+    - cfitsio
     - fftw
+    - hdf5
     - libblas
     - liblapack
     - libxml2
     - python
-    - casacore
-    - cfitsio
     - wcslib
 
 about:
diff --git a/wsclean/conda_build_config.yaml b/wsclean/conda_build_config.yaml
index af1d4f7..2bfaf85 100644
--- a/wsclean/conda_build_config.yaml
+++ b/wsclean/conda_build_config.yaml
@@ -1,16 +1,33 @@
 python:
   - 3.9
 
+# For reasons that are not entirely clear to me, conda build
+# constrains the cfitsio and hdf5 run dependencies to a specific patch.
+# Here, we make sure the boost / cfitsio / hdf5 combination that fits
+# the Karabo environment, 1.82 / 4.3.1 / 1.14.2, is built.
+# And we build more boost / cfitsio / hdf5 combinations, one for each
+# boost version that is compatible with this library and its dependencies.
 boost:
   - 1.74
   - 1.78
   - 1.82
   - 1.84
-
+cfitsio:
+  - 4.1.0
+  - 4.3.0
+  - 4.3.1
+  - 4.4.0
 hdf5:
+  - 1.12.1
+  - 1.14.1
   - 1.14.2
   - 1.14.3
+zip_keys:
+  - boost
+  - cfitsio
+  - hdf5
 
 pin_run_as_build:
   boost: x.x
+  cfitsio: x.x.x
   hdf5: x.x.x