diff --git a/conda/recipes/cuproj/conda_build_config.yaml b/conda/recipes/cuproj/conda_build_config.yaml
index e28b98da7..92f617ce1 100644
--- a/conda/recipes/cuproj/conda_build_config.yaml
+++ b/conda/recipes/cuproj/conda_build_config.yaml
@@ -15,3 +15,7 @@ sysroot_version:
 
 cmake_version:
   - ">=3.26.4"
+
+# Workaround until proj 9.3.1 migration completes
+proj:
+  - "9.3.0"