diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cb563a4..7d2112b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,6 +27,7 @@ jobs:
             ln -s /Library/Frameworks/Python.framework/Versions/3.11/include/python3.11/cpython/longintrepr.h /Library/Frameworks/Python.framework/Versions/3.11/include/python3.11
             pip install -r requirements.txt
           CIBW_BEFORE_BUILD_LINUX: pip install -r requirements.txt
+          CIBW_REPAIR_WHEEL_COMMAND_MACOS: delocate-wheel --require-archs x86_64 -w {dest_dir} -v {wheel}
           CIBW_TEST_SKIP: "*-macosx_arm64"
           CIBW_TEST_REQUIRES: cython click>=8.0 numpy scipy pandas pysam>=0.22.0 networkx>=2.4 scikit-learn>=0.22 sortedcontainers lightgbm
           CIBW_TEST_COMMAND: dysgu test --verbose
diff --git a/MANIFEST.in b/MANIFEST.in
index 887d6a3..20c9dc3 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -5,21 +5,18 @@ include dysgu/*
 include ci/*
 include scripts/*
 
-include dysgu/htslib/*.so
-include dysgu/htslib/*.dylib
+include dysgu/htslib/*.o
+include dysgu/htslib/*.c
+include dysgu/htslib/*.h
+include dysgu/htslib/htslib/*.h
+include dysgu/htslib/cram/*.c
+include dysgu/htslib/cram/*.h
+graft dysgu/htslib/os
+graft dysgu/htslib/m4
+graft dysgu/htslib/htscodecs/htscodecs
+graft dysgu/htslib/htscodecs/m4
 
-#include dysgu/htslib/*.o
-#include dysgu/htslib/*.c
-#include dysgu/htslib/*.h
-#include dysgu/htslib/htslib/*.h
-#include dysgu/htslib/cram/*.c
-#include dysgu/htslib/cram/*.h
-#graft dysgu/htslib/os
-#graft dysgu/htslib/m4
-#graft dysgu/htslib/htscodecs/htscodecs
-#graft dysgu/htslib/htscodecs/m4
-
-#prune dysgu/htslib/test
-#prune dysgu/htslib/htscodecs/test
-#exclude dysgu/htslib/.*
-#exclude dysgu/scikitbio/.*
\ No newline at end of file
+prune dysgu/htslib/test
+prune dysgu/htslib/htscodecs/test
+exclude dysgu/htslib/.*
+exclude dysgu/scikitbio/.*
\ No newline at end of file