diff --git a/conda-forge.yml b/conda-forge.yml
index c371034..a8fad4c 100644
--- a/conda-forge.yml
+++ b/conda-forge.yml
@@ -12,3 +12,4 @@ provider:
 test_on_native_only: true
 conda_build:
   pkg_format: '2'
+  error_overlinking: true
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 3b0a00e..d2782a7 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -10,7 +10,7 @@ source:
   sha256: f6972acd6a65354f6414e69460d2e175729470632bdac05919bc2f7f32e48cbd
 
 build:
-  number: 0
+  number: 1
   skip: true  # [win and vc<14]
 
 requirements:
@@ -25,9 +25,11 @@ requirements:
     - mpir             # [win]
     - mpfr
     - mpc
+    - libflint
     - llvmdev <17
+    # these two come from LLVM
+    - zstd
     - zlib
-    - libflint
   run:
     - gmp              # [unix]
     - mpir             # [win]