diff --git a/config/common.txt b/config/common.txt
index 970e881..82f10f3 100644
--- a/config/common.txt
+++ b/config/common.txt
@@ -13,6 +13,7 @@ packaging
 #
 # Require the OpenBLAS + OpenMP flavor of linear algebra packages
 #
+_openmp_mutex=*=*_llvm
 openblas=*=openmp_*
 libopenblas=*=openmp_*
 libblas=*=*openblas
diff --git a/pkgs/libactpol/meta.yaml b/pkgs/libactpol/meta.yaml
index d864eaa..b27974c 100644
--- a/pkgs/libactpol/meta.yaml
+++ b/pkgs/libactpol/meta.yaml
@@ -20,11 +20,9 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
@@ -44,6 +42,7 @@ requirements:
     # https://github.com/conda-forge/perl-feedstock/issues/56
     - libxcrypt1   # [linux]
   run:
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
diff --git a/pkgs/libactpol_deps/meta.yaml b/pkgs/libactpol_deps/meta.yaml
index 17f6ccf..423474b 100644
--- a/pkgs/libactpol_deps/meta.yaml
+++ b/pkgs/libactpol_deps/meta.yaml
@@ -21,11 +21,9 @@ requirements:
   build:
     - {{ compiler('c') }}
     - {{ compiler('fortran') }}
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
@@ -37,6 +35,7 @@ requirements:
     - make
     - zziplib
   run:
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
diff --git a/pkgs/moby2/meta.yaml b/pkgs/moby2/meta.yaml
index 3ba97a7..b900ced 100644
--- a/pkgs/moby2/meta.yaml
+++ b/pkgs/moby2/meta.yaml
@@ -21,11 +21,9 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
@@ -40,6 +38,7 @@ requirements:
     # building with a numba-compatible numpy version
     - numba
   run:
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
diff --git a/pkgs/pixell/meta.yaml b/pkgs/pixell/meta.yaml
index 34eb13f..a5dd6f5 100644
--- a/pkgs/pixell/meta.yaml
+++ b/pkgs/pixell/meta.yaml
@@ -20,11 +20,9 @@ requirements:
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
     - {{ compiler('fortran') }}
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
@@ -48,6 +46,7 @@ requirements:
     # https://github.com/conda-forge/perl-feedstock/issues/56
     - libxcrypt1   # [linux]
   run:
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
diff --git a/pkgs/qpoint/meta.yaml b/pkgs/qpoint/meta.yaml
index c61bc70..12c77f6 100644
--- a/pkgs/qpoint/meta.yaml
+++ b/pkgs/qpoint/meta.yaml
@@ -20,11 +20,9 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - python
     - setuptools
     - numpy=1.26.*
diff --git a/pkgs/so3g/meta.yaml b/pkgs/so3g/meta.yaml
index 796d128..b159de9 100644
--- a/pkgs/so3g/meta.yaml
+++ b/pkgs/so3g/meta.yaml
@@ -27,11 +27,9 @@ requirements:
     - {{ compiler('cxx') }}
     - cmake
     - make         # [unix]
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
@@ -48,6 +46,7 @@ requirements:
     # building with a numba-compatible numpy version
     - numba
   run:
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
diff --git a/pkgs/toast/meta.yaml b/pkgs/toast/meta.yaml
index a01b2f4..46b192b 100644
--- a/pkgs/toast/meta.yaml
+++ b/pkgs/toast/meta.yaml
@@ -26,11 +26,9 @@ requirements:
     - {{ compiler('cxx') }}
     - cmake
     - make         # [unix]
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
   host:
-    - llvm-openmp  # [osx]
-    - libgomp      # [linux]
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
@@ -42,6 +40,7 @@ requirements:
     - libaatm
     - libflac
   run:
+    - llvm-openmp # [osx or linux]
     - openblas * openmp_*
     - libopenblas * openmp_*
     - libblas * *openblas
diff --git a/tools/bootstrap_base.sh b/tools/bootstrap_base.sh
index ff5f5a4..6416672 100755
--- a/tools/bootstrap_base.sh
+++ b/tools/bootstrap_base.sh
@@ -26,7 +26,7 @@ bash "${inst}" -b -f -p "${base}"
 source "${base}/etc/profile.d/conda.sh"
 conda activate base
 conda update -n base --yes conda
-conda install -n base --yes conda-libmamba-solver conda-build
+conda install -n base --yes conda-libmamba-solver conda-build conda-verify
 conda deactivate
 
 # Create base config file