diff --git a/builder/stage4/26-pisdr-limesdr-toolbox/00-run.sh b/builder/stage4/26-pisdr-limesdr-toolbox/00-run.sh
index 11d53a1..ee6cdce 100755
--- a/builder/stage4/26-pisdr-limesdr-toolbox/00-run.sh
+++ b/builder/stage4/26-pisdr-limesdr-toolbox/00-run.sh
@@ -5,7 +5,7 @@ mkdir -p    "/home/${FIRST_USER_NAME}/PiSDR/Software"
 cd 		    "/home/${FIRST_USER_NAME}/PiSDR/Software"
 
 if [ ! -d "limesdr_toolbox" ]; then
-    git clone https://github.com/luigifcruz/limesdr_toolbox.git
+    git clone https://github.com/emvivre/limesdr_toolbox.git
 fi
 
 cd limesdr_toolbox
diff --git a/builder/stage4/31-pisdr-urh/00-run.sh b/builder/stage4/31-pisdr-urh/00-run.sh
new file mode 100755
index 0000000..c083045
--- /dev/null
+++ b/builder/stage4/31-pisdr-urh/00-run.sh
@@ -0,0 +1,14 @@
+#!/bin/bash -e
+
+on_chroot << EOF
+mkdir -p    "/home/${FIRST_USER_NAME}/PiSDR/Software"
+cd 		    "/home/${FIRST_USER_NAME}/PiSDR/Software"
+
+if [ ! -d "urh" ]; then
+    git clone https://github.com/jopohl/urh.git
+fi
+
+cd urh
+python3 -m pip install --upgrade cython
+python3 setup.py install
+EOF
\ No newline at end of file