diff --git a/genesis/buildgenesis.sh b/genesis/buildgenesis.sh
index 8791eb84..7d0c21cc 100644
--- a/genesis/buildgenesis.sh
+++ b/genesis/buildgenesis.sh
@@ -17,15 +17,12 @@ popd
 rm -rf $tdir
 cp $tfile rpmlist
 cp confluent-genesis.spec confluent-genesis-out.spec
-for r in $(cat rpmlist); do
-	#rpm -qi $r | grep ^License|sed -e 's/^.*:/${r}:/' >> licenselist
-	for l in $(rpm -qL $r); do
-		lo=${l#/usr/share/}
-		lo=${lo#licenses/}
-		mkdir -p licenses/$(dirname $lo)
-		cp $l licenses/$lo
-		echo %license /opt/confluent/genesis/%{arch}/licenses/$lo >> confluent-genesis-out.spec
-	done
+for lic in $(python3 getlicenses.py rpmlist); do
+	lo=${lic#/usr/share/}
+	lo=${lo#licenses/}
+	mkdir -p licenses/$(dirname $lo)
+	cp $lic licenses/$lo
+	echo %license /opt/confluent/genesis/%{arch}/licenses/$lo >> confluent-genesis-out.spec
 done
 cp -f /boot/vmlinuz-$(uname -r) boot/kernel
 cp /boot/efi/EFI/BOOT/BOOTX64.EFI boot/efi/boot
diff --git a/genesis/getlicenses.py b/genesis/getlicenses.py
new file mode 100644
index 00000000..c46bcd5d
--- /dev/null
+++ b/genesis/getlicenses.py
@@ -0,0 +1,43 @@
+import subprocess
+import sys
+import shlex
+
+def runcmd(cmd):
+    return subprocess.check_output(shlex.split(cmd)).decode('utf8').split('\n')
+
+def getsrpm(rpm):
+    rpminfo = runcmd(f'rpm -qi {rpm}')
+    for inf in rpminfo:
+        if inf.startswith('Source RPM'):
+            srpm = inf.split(':', 1)[1].strip()
+            return srpm
+
+srpmtorpm = {}
+rpmtosrpm = {}
+allrpmlist = runcmd('rpm -qa')
+for rpm in allrpmlist:
+    if not rpm:
+        continue
+    srpm = getsrpm(rpm)
+    rpmtosrpm[rpm] = srpm
+    if srpm in srpmtorpm:
+        srpmtorpm[srpm].add(rpm)
+    else:
+        srpmtorpm[srpm] = {rpm}
+
+with open(sys.argv[1]) as rpmlist:
+    rpmlist = rpmlist.read().split('\n')
+licenses = set([])
+for rpm in rpmlist:
+    if not rpm:
+        continue
+    srpm = rpmtosrpm[rpm]
+    for relrpm in srpmtorpm[srpm]:
+        liclist = runcmd(f'rpm -qL {relrpm}')
+        for lic in liclist:
+            licenses.add(lic)
+for lic in sorted(licenses):
+    print(lic)
+
+            
+