diff --git a/projects/c-ares.org/package.yml b/projects/c-ares.org/package.yml
index 1fad20f6..e07184f3 100644
--- a/projects/c-ares.org/package.yml
+++ b/projects/c-ares.org/package.yml
@@ -12,10 +12,16 @@ versions:
 build:
   dependencies:
     cmake.org: ^3
+    curl.se: '*'
   working-directory: build
-  script: |
-    cmake .. -DCMAKE_INSTALL_PREFIX="{{prefix}}" -DCMAKE_BUILD_TYPE=Release
-    make --jobs {{hw.concurrency}} install
+  script:
+    # thirdparty header not packaged in tarball
+    # https://github.com/c-ares/c-ares/pull/750
+    - run: curl -O https://opensource.apple.com/source/configd/configd-1109.140.1/dnsinfo/dnsinfo.h
+      working-directory: ../src/lib/thirdparty/apple
+      if: '>=1.29.0'
+    - cmake .. -DCMAKE_INSTALL_PREFIX="{{prefix}}" -DCMAKE_BUILD_TYPE=Release
+    - make --jobs {{hw.concurrency}} install
 
 test:
   fixture: |