diff --git a/var/spack/repos/builtin/packages/exago/package.py b/var/spack/repos/builtin/packages/exago/package.py
index 037c26bf07..6809deeff3 100644
--- a/var/spack/repos/builtin/packages/exago/package.py
+++ b/var/spack/repos/builtin/packages/exago/package.py
@@ -41,6 +41,7 @@ class Exago(CMakePackage, CudaPackage, ROCmPackage):
     conflicts('~hiop~ipopt', msg="ExaGO needs at least one solver enabled")
 
     # Dependencides
+    depends_on('pkgconfig', type='build')
     depends_on('mpi', when='+mpi')
     depends_on('blas')
     depends_on('cuda', when='+cuda')