diff --git a/config/binary/packages_conda.txt b/config/binary/packages_conda.txt
index 4197c66..79d99d9 100644
--- a/config/binary/packages_conda.txt
+++ b/config/binary/packages_conda.txt
@@ -1,5 +1,5 @@
 # Adjust the default python version
-python=3.12
+python=3.13
 #
 jupyterlab
 plotly
diff --git a/config/default/packages_conda.txt b/config/default/packages_conda.txt
index 4197c66..79d99d9 100644
--- a/config/default/packages_conda.txt
+++ b/config/default/packages_conda.txt
@@ -1,5 +1,5 @@
 # Adjust the default python version
-python=3.12
+python=3.13
 #
 jupyterlab
 plotly
diff --git a/config/della/packages_conda.txt b/config/della/packages_conda.txt
index 6f1e43e..983fa5f 100644
--- a/config/della/packages_conda.txt
+++ b/config/della/packages_conda.txt
@@ -1,5 +1,5 @@
 # Adjust the default python version
-python=3.10
+python=3.13
 openmpi=4.1.*=external_*
 #
 # These are low-level tools needed to build local packages
@@ -7,4 +7,4 @@ openmpi=4.1.*=external_*
 #
 pandas
 ipython_genutils
-radical.pilot
\ No newline at end of file
+radical.pilot
diff --git a/config/minimal/packages_conda.txt b/config/minimal/packages_conda.txt
index 90ccf1c..988ed58 100644
--- a/config/minimal/packages_conda.txt
+++ b/config/minimal/packages_conda.txt
@@ -1,3 +1,3 @@
 # Adjust the default python version
-python=3.12
+python=3.13
 #
diff --git a/config/perlmutter/packages_conda.txt b/config/perlmutter/packages_conda.txt
index 89b1c2e..d24d124 100644
--- a/config/perlmutter/packages_conda.txt
+++ b/config/perlmutter/packages_conda.txt
@@ -1,5 +1,5 @@
 # Adjust the default python version
-python=3.12
+python=3.13
 #
 plotly
 plotly-resampler
diff --git a/config/tiger3/packages_conda.txt b/config/tiger3/packages_conda.txt
index 04d58a8..d97ee1f 100644
--- a/config/tiger3/packages_conda.txt
+++ b/config/tiger3/packages_conda.txt
@@ -1,5 +1,5 @@
 # Adjust the default python version
-python=3.11
+python=3.13
 openmpi=4.1.6=external_*
 #
 # These are low-level tools needed to build local packages
diff --git a/config/universe/packages_conda.txt b/config/universe/packages_conda.txt
index 4197c66..79d99d9 100644
--- a/config/universe/packages_conda.txt
+++ b/config/universe/packages_conda.txt
@@ -1,5 +1,5 @@
 # Adjust the default python version
-python=3.12
+python=3.13
 #
 jupyterlab
 plotly
diff --git a/pkgs/libactpol/meta.yaml b/pkgs/libactpol/meta.yaml
index d4d8992..03bdd1a 100644
--- a/pkgs/libactpol/meta.yaml
+++ b/pkgs/libactpol/meta.yaml
@@ -36,7 +36,7 @@ requirements:
     # https://github.com/conda-forge/perl-feedstock/issues/56
     - libxcrypt1   # [linux]
     # Not a dependency, force installing a NaMaster-compatible CFITSIO version
-    - namaster >=2.4
+    - namaster
     # Not a dependency, force installing a compatible libraries
     - so3g
     - toast
diff --git a/pkgs/libactpol_deps/meta.yaml b/pkgs/libactpol_deps/meta.yaml
index c7a62f1..74bab65 100644
--- a/pkgs/libactpol_deps/meta.yaml
+++ b/pkgs/libactpol_deps/meta.yaml
@@ -35,6 +35,7 @@ requirements:
     - libopenblas * *openmp*
     - libblas * *openblas
     - zziplib
+    - namaster
   run:
 
 test:
diff --git a/pkgs/moby2/meta.yaml b/pkgs/moby2/meta.yaml
index be9432e..b237ff4 100644
--- a/pkgs/moby2/meta.yaml
+++ b/pkgs/moby2/meta.yaml
@@ -39,7 +39,7 @@ requirements:
     # building with a numba-compatible numpy version
     - numba
     # Not a dependency, force installing a NaMaster-compatible GSL version
-    - namaster >=2.4
+    - namaster
     # Not a dependency, force installing a compatible libraries
     - so3g
     - toast
diff --git a/pkgs/so3g/meta.yaml b/pkgs/so3g/meta.yaml
index 6063078..367c0b2 100644
--- a/pkgs/so3g/meta.yaml
+++ b/pkgs/so3g/meta.yaml
@@ -33,9 +33,11 @@ requirements:
     - pip
     - numpy
     - scipy
-    - boost
-    - libboost-devel
-    - libboost-python-devel
+    - libboost <1.89
+    - libboost-devel <1.89
+    - libboost-headers <1.89
+    - libboost-python <1.89
+    - libboost-python-devel <1.89
     - libflac
     - gsl
     - glog
@@ -45,7 +47,7 @@ requirements:
     # building with a numba-compatible numpy version
     - numba
     # Not a dependency, force installing a NaMaster-compatible GSL version
-    - namaster >=2.4
+    - namaster
   run:
     - llvm-openmp # [osx]
     - libopenblas * *openmp*
@@ -53,8 +55,6 @@ requirements:
     - {{ pin_compatible("scipy") }}
     - {{ pin_compatible("libopenblas") }}
     - {{ pin_compatible("libblas") }}
-    - {{ pin_compatible("libboost-python") }}
-    - {{ pin_compatible("libboost") }}
     - {{ pin_compatible("libflac") }}
     - {{ pin_compatible("gsl") }}
     - python