diff --git a/recipes-musicians/rncbc/drumkv1.bb b/recipes-musicians/rncbc/drumkv1.bb
index 03d464a..02f41f8 100644
--- a/recipes-musicians/rncbc/drumkv1.bb
+++ b/recipes-musicians/rncbc/drumkv1.bb
@@ -14,13 +14,19 @@ DEPENDS += " \
 
 inherit cmake_qt5 gtk-icon-cache mime
 
-# to get hydrogen2drumkv1 patch applied
-inherit dos2unix
+do_convert_crlf_to_lf[depends] += "dos2unix-native:do_populate_sysroot"
 
+# Convert CRLF line terminators to LF for hydrogen2drumkv1 only
+do_convert_crlf_to_lf () {
+	find ${WORKDIR}/hydrogen2drumkv1 -type f -exec dos2unix {} \;
+}
+
+addtask convert_crlf_to_lf after do_unpack before do_patch
 SRC_URI = " \
     ${SOURCEFORGE_MIRROR}/project/${BPN}/${BPN}/${PV}/${BPN}-${PV}.tar.gz \
     file://0002-Avoid-stripping-CMake.patch \
     git://github.com/TuriSc/hydrogen2drumkv1.py.git;name=hydrogen2drumkv1;destsuffix=hydrogen2drumkv1 \
+    file://0001-Fix-for-python-3.9.patch;patchdir=../hydrogen2drumkv1 \
 "
 PV = "0.9.21"
 SRC_URI[sha256sum] = "35952d6ed82cde9c0d8b516addd2e2f376b94b6d777f2b2a6ffd3978b49da7fa"