diff --git a/recipes/vcf-validator/build.sh b/recipes/vcf-validator/build.sh
index 1b1bad0e5fa5a..0d0600b32e55d 100644
--- a/recipes/vcf-validator/build.sh
+++ b/recipes/vcf-validator/build.sh
@@ -1,12 +1,22 @@
 #!/bin/bash
 
+set -x
+
 # Set c++ to version 11
 export CXXFLAGS="-std=c++11 ${CXXFLAGS}"
 
+case $(uname -m) in 
+  aarch64 | arm64)
+    export CXXFLAGS="${CXXFLAGS} -fsigned-char" # .../vcf/compression.cpp:101:9: error: narrowing conversion of '-117' from 'int' to 'char'
+    ;;
+  *)
+    ;;
+esac
+
 mkdir build || { echo "Failed to create build directory" >&2; exit 1; }
 cd build || { echo "Failed to go into build directory" >&2; exit 1; }
-cmake -G "Unix Makefiles" ..
-make -j2 || { echo "Build failed" >&2; exit 1; }
+cmake -G "Unix Makefiles" -DCMAKE_CXX_FLAGS="${CXXFLAGS}" ..
+make -j"${CPU_COUNT}" || { echo "Build failed" >&2; exit 1; }
 cd .. || { echo "Failed to return to parent directory" >&2; exit 1; }
 if ! ./build/bin/test_validation_suite; then
   echo "Validation suite failed" >&2
diff --git a/recipes/vcf-validator/meta.yaml b/recipes/vcf-validator/meta.yaml
index 76476a1844f40..66ac7e00d8d62 100644
--- a/recipes/vcf-validator/meta.yaml
+++ b/recipes/vcf-validator/meta.yaml
@@ -10,25 +10,22 @@ source:
   sha256: b46117700445644e6fc5a6d2655b477902c67aba0e7abe8a62df6cb49f923fff
 
 build:
-  script:
-  number: 0
+  number: 1
   run_exports:
     - {{ pin_subpackage("vcf-validator", max_pin="x.x") }}
 
 requirements:
-  host:
-    - libboost-devel
-    - libcurl
   build:
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
     - make
     - cmake >=2.8
+  host:
     - libboost-devel
+    - libcurl
     - libtool
     - zstd
     - c-ares
-    - libcurl
     - openssl
     - bzip2
     - libzlib
@@ -49,6 +46,7 @@ about:
 
 extra:
   additional-platforms:
+    - linux-aarch64
     - osx-arm64
   recipe-maintainers:
     - apriltuesday