diff --git a/Project.toml b/Project.toml
index 3c723c8..5e3f859 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,7 +18,7 @@ SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
 [compat]
 DSP = "v0.7.0"
 Documenter = "v0.27.5"
-FFTW = "v1.4.0"
+FFTW = "v1.2.4"
 ForwardDiff = "v0.10.19"
 JLD = "v0.12.3"
 LsqFit = "v0.12.1"