diff --git a/recipes/samtools/0.1.18/build.sh b/recipes/samtools/0.1.18/build.sh
index dc133c42d55c1..963d561450081 100644
--- a/recipes/samtools/0.1.18/build.sh
+++ b/recipes/samtools/0.1.18/build.sh
@@ -3,6 +3,6 @@
 # does not affect the linux build
 # this is has been fixed in newer versions: https://github.com/samtools/samtools/issues/22
 sed -i.bak -E 's/(inline void __ks_insertsort_)/static \1/g' ksort.h
-make INCLUDES="-I. -I$PREFIX/include -I$PREFIX/include/ncurses" LIBCURSES="-L$PREFIX/lib -lncurses -ltinfo" LIBPATH="-L$PREFIX/lib" CC=$CC CFLAGS="-g -Wall -O2 -I$PREFIX/include -L$PREFIX/lib"
+make -j ${CPU_COUNT} INCLUDES="-I. -I$PREFIX/include -I$PREFIX/include/ncurses" LIBCURSES="-L$PREFIX/lib -lncurses -ltinfo" LIBPATH="-L$PREFIX/lib" CC=$CC CFLAGS="-g -Wall -O2 -I$PREFIX/include -L$PREFIX/lib"
 mkdir -p $PREFIX/bin
-mv samtools $PREFIX/bin
\ No newline at end of file
+mv samtools $PREFIX/bin
diff --git a/recipes/samtools/0.1.18/meta.yaml b/recipes/samtools/0.1.18/meta.yaml
index de1e934bbf01d..1e2960c3a7bd6 100644
--- a/recipes/samtools/0.1.18/meta.yaml
+++ b/recipes/samtools/0.1.18/meta.yaml
@@ -1,3 +1,5 @@
+{% set name = "samtools" %}
+
 package:
   name: samtools
   version: 0.1.18
@@ -7,7 +9,9 @@ source:
   url: https://github.com/samtools/samtools/archive/0.1.18.tar.gz
 
 build:
-  number: 13
+  number: 14
+  run_exports:
+    - {{ pin_subpackage(name, max_pin="x") }}
 
 requirements:
   build:
@@ -30,5 +34,8 @@ about:
   summary: Tools for dealing with SAM and BAM files
 
 extra:
+  additional-platforms:
+    - linux-aarch64
+    - osx-arm64
   identifiers:
     - biotools:samtools
diff --git a/recipes/samtools/0.1.19/build.sh b/recipes/samtools/0.1.19/build.sh
index 0a00fb4756525..c27a2e240bcbb 100644
--- a/recipes/samtools/0.1.19/build.sh
+++ b/recipes/samtools/0.1.19/build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-make INCLUDES="-I. -I$PREFIX/include -I$PREFIX/include/ncurses" LIBCURSES="-L$PREFIX/lib -lncurses -ltinfo" LIBPATH="-L$PREFIX/lib" CC=$CC CFLAGS="-g -Wall -O2 -I$PREFIX/include -L$PREFIX/lib"
+make -j ${CPU_COUNT} INCLUDES="-I. -I$PREFIX/include -I$PREFIX/include/ncurses" LIBCURSES="-L$PREFIX/lib -lncurses -ltinfo" LIBPATH="-L$PREFIX/lib" CC=$CC CFLAGS="-g -Wall -O2 -I$PREFIX/include -L$PREFIX/lib"
 mkdir -p $PREFIX/bin
 mv samtools $PREFIX/bin
 mv bcftools/bcftools $PREFIX/bin
diff --git a/recipes/samtools/0.1.19/meta.yaml b/recipes/samtools/0.1.19/meta.yaml
index 65c3cab8f4be7..4bb1df6c926f6 100644
--- a/recipes/samtools/0.1.19/meta.yaml
+++ b/recipes/samtools/0.1.19/meta.yaml
@@ -1,3 +1,4 @@
+{% set name = "samtools" %}
 package:
   name: samtools
   version: 0.1.19
@@ -7,8 +8,11 @@ source:
   url: https://github.com/samtools/samtools/archive/refs/tags/0.1.19.tar.gz
 
 build:
-  number: 11
-
+  number: 12
+  skip: True # [osx]
+  run_exports:
+    - {{ pin_subpackage(name, max_pin="x") }}
+    
 requirements:
   build:
     - make
@@ -30,5 +34,8 @@ about:
   summary: Tools for dealing with SAM and BAM files
 
 extra:
+  additional-platforms:
+    - linux-aarch64
+    - osx-arm64
   identifiers:
     - biotools:samtools