diff --git a/easystacks/riscv/2025.06-001/eessi-2025.06-eb-5.2.0-2025b.yml b/easystacks/riscv/2025.06-001/eessi-2025.06-eb-5.2.0-2025b.yml
index 071d008..bbacf2c 100644
--- a/easystacks/riscv/2025.06-001/eessi-2025.06-eb-5.2.0-2025b.yml
+++ b/easystacks/riscv/2025.06-001/eessi-2025.06-eb-5.2.0-2025b.yml
@@ -1,5 +1,6 @@
 easyconfigs:
   - GCCcore-14.3.0.eb
+  - FFTW-3.3.10-GCC-14.3.0.eb
   - UnZip-6.0-GCCcore-14.3.0.eb
   - pkgconf-2.4.3-GCCcore-14.3.0.eb
   - libffi-3.5.1-GCCcore-14.3.0.eb