diff --git a/Cargo.toml b/Cargo.toml
index 959f661..24258b6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ description = """
 A simple and fast `no_std` library to get the frequency spectrum of a digital signal (e.g. audio) using FFT.
 It follows the KISS principle and consists of simple building blocks/optional features.
 """
-version = "0.4.0"
+version = "0.4.1"
 authors = ["Philipp Schuster <phip1611@gmail.com>"]
 edition = "2018"
 keywords = ["fft", "spectrum", "frequencies", "audio", "dsp"]
@@ -15,8 +15,8 @@ homepage = "https://github.com/phip1611/spectrum-analyzer"
 repository = "https://github.com/phip1611/spectrum-analyzer"
 documentation = "https://docs.rs/spectrum-analyzer"
 
-# fixes build problems of wrong feature resolution in microfft crate, see
-# https://gitlab.com/ra_kete/microfft-rs/-/merge_requests/11
+# fixes `no_std` build problems caused by wrong feature resolution of Cargo
+# This works since Rust 1.51 (stable)
 resolver = "2"
 
 # room for mutliple fft implementations in the future, for example "rustfft" that needs STD
diff --git a/README.md b/README.md
index 8653f0c..633397c 100644
--- a/README.md
+++ b/README.md
@@ -28,10 +28,9 @@ or look into the screenshots of this README.
 
 ### Cargo.toml
 ```Cargo.toml
-# only needed when using "microfft"-feature
-# fixes build problems of wrong feature resolution in microfft crate, see
-# https://gitlab.com/ra_kete/microfft-rs/-/merge_requests/11
-# this requires Rust Stable 1.51
+# ONLY NEEDED FOR `no_std`-builds!
+# fixes `no_std` build problems caused by wrong feature resolution of Cargo
+# This works since Rust 1.51 (stable)
 resolver = "2"
 
 # by default feature "rustfft-complex" is used