diff --git a/gromacs/meta.yaml b/gromacs/meta.yaml
index e5fa76b..abaf928 100644
--- a/gromacs/meta.yaml
+++ b/gromacs/meta.yaml
@@ -17,14 +17,14 @@ requirements:
   build:
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
-    - binutils
+    - binutils     # [not (osx and arm64)]
     - cmake
     - llvm-openmp  # [osx]
     - python
   host:
     - openmpi
     - fftw
-    - libhwloc 1.*
+    - libhwloc 1.* # [not (osx and arm64)]
     - libblas
     - liblapack
     - llvm-openmp  # [osx]
@@ -32,7 +32,7 @@ requirements:
   run:
     - openmpi
     - fftw
-    - libhwloc 1.*
+    - libhwloc 1.* # [not (osx and arm64)]
     - llvm-openmp  # [osx]
     - plumed >=2
 
@@ -45,4 +45,3 @@ about:
   home: http://www.gromacs.org/
   license: GNU Lesser General Public License (LGPL)
   summary: GROMACS is a versatile package to perform molecular dynamics.
-
diff --git a/lammps/meta.yaml b/lammps/meta.yaml
index f1ce22b..5dd4612 100644
--- a/lammps/meta.yaml
+++ b/lammps/meta.yaml
@@ -13,7 +13,7 @@ requirements:
   build:
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
-    - binutils
+    - binutils     # [not (osx and arm64)]
     - sed
     - make
     - cmake
@@ -50,4 +50,3 @@ about:
     under the terms of the GNU Public License (GPL).
   doc_url: http://lammps.sandia.gov/doc/Manual.html
   dev_url: https://github.com/lammps/lammps
-