diff --git a/gr3.8.patch b/gr3.8.patch
index 79e532c..5aaaa84 100644
--- a/gr3.8.patch
+++ b/gr3.8.patch
@@ -283,7 +283,7 @@ index 7cbf05b..73a861a 100755
 @@ -1,4 +1,4 @@
 -#!/usr/bin/env python
 +#!/usr/bin/env python3
- from gnuradio import gr, gru, audio, eng_notation, blocks
+ from gnuradio import gr, audio, eng_notation, blocks
  from gnuradio.eng_option import eng_option
  from optparse import OptionParser
 diff --git a/op25/gr-op25_repeater/apps/util/arb-resample.py b/op25/gr-op25_repeater/apps/util/arb-resample.py
diff --git a/op25/gr-op25_repeater/apps/gr_gnuplot.py b/op25/gr-op25_repeater/apps/gr_gnuplot.py
index 2d349f4..290c590 100644
--- a/op25/gr-op25_repeater/apps/gr_gnuplot.py
+++ b/op25/gr-op25_repeater/apps/gr_gnuplot.py
@@ -27,7 +27,7 @@ import json
 import threading
 import glob
 
-from gnuradio import gr, gru, eng_notation
+from gnuradio import gr, eng_notation
 from gnuradio import blocks, audio
 from gnuradio.eng_option import eng_option
 import numpy as np
diff --git a/op25/gr-op25_repeater/apps/multi_rx.py b/op25/gr-op25_repeater/apps/multi_rx.py
index 0e00fe0..5674acc 100755
--- a/op25/gr-op25_repeater/apps/multi_rx.py
+++ b/op25/gr-op25_repeater/apps/multi_rx.py
@@ -28,7 +28,7 @@ import select
 import traceback
 import osmosdr
 
-from gnuradio import audio, eng_notation, gr, gru, filter, blocks, fft, analog, digital
+from gnuradio import audio, eng_notation, gr, filter, blocks, fft, analog, digital
 from gnuradio.eng_option import eng_option
 from math import pi
 from optparse import OptionParser
diff --git a/op25/gr-op25_repeater/apps/p25_decoder.py b/op25/gr-op25_repeater/apps/p25_decoder.py
index be60627..c15b94f 100644
--- a/op25/gr-op25_repeater/apps/p25_decoder.py
+++ b/op25/gr-op25_repeater/apps/p25_decoder.py
@@ -27,7 +27,7 @@ P25 decoding block.
 """
 
 import time
-from gnuradio import gr, gru, eng_notation
+from gnuradio import gr, eng_notation
 from gnuradio import blocks, audio
 from gnuradio.eng_option import eng_option
 import op25
diff --git a/op25/gr-op25_repeater/apps/p25_demodulator.py b/op25/gr-op25_repeater/apps/p25_demodulator.py
index 1baf901..b74e4aa 100644
--- a/op25/gr-op25_repeater/apps/p25_demodulator.py
+++ b/op25/gr-op25_repeater/apps/p25_demodulator.py
@@ -27,7 +27,7 @@ P25 C4FM/CQPSK demodulation block.
 """
 
 import sys
-from gnuradio import gr, gru, eng_notation
+from gnuradio import gr, eng_notation
 from gnuradio import filter, analog, digital, blocks
 from gnuradio.eng_option import eng_option
 import op25
diff --git a/op25/gr-op25_repeater/apps/rx.py b/op25/gr-op25_repeater/apps/rx.py
index 4468cf0..2d99125 100755
--- a/op25/gr-op25_repeater/apps/rx.py
+++ b/op25/gr-op25_repeater/apps/rx.py
@@ -44,7 +44,7 @@ try:
 except:
     pass
 
-from gnuradio import audio, eng_notation, gr, gru, filter, blocks, fft, analog, digital
+from gnuradio import audio, eng_notation, gr, filter, blocks, fft, analog, digital
 from gnuradio.eng_option import eng_option
 from math import pi
 from optparse import OptionParser
diff --git a/op25/gr-op25_repeater/apps/tdma/tdma_audio.py b/op25/gr-op25_repeater/apps/tdma/tdma_audio.py
index 391ed9f..ade6bb6 100755
--- a/op25/gr-op25_repeater/apps/tdma/tdma_audio.py
+++ b/op25/gr-op25_repeater/apps/tdma/tdma_audio.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-from gnuradio import gr, gru, audio, eng_notation, analog, blocks, filter
+from gnuradio import gr, audio, eng_notation, analog, blocks, filter
 from gnuradio.eng_option import eng_option
 from optparse import OptionParser
 import numpy as np
diff --git a/op25/gr-op25_repeater/apps/tx/dv_tx.py b/op25/gr-op25_repeater/apps/tx/dv_tx.py
index 342ba3f..b6e5516 100755
--- a/op25/gr-op25_repeater/apps/tx/dv_tx.py
+++ b/op25/gr-op25_repeater/apps/tx/dv_tx.py
@@ -25,7 +25,7 @@
 import sys
 import os
 import math
-from gnuradio import gr, gru, audio, eng_notation
+from gnuradio import gr, audio, eng_notation
 from gnuradio import filter, blocks, analog, digital
 from gnuradio.eng_option import eng_option
 from optparse import OptionParser
diff --git a/op25/gr-op25_repeater/apps/tx/multi_tx.py b/op25/gr-op25_repeater/apps/tx/multi_tx.py
index a54bc01..a0eaf0b 100755
--- a/op25/gr-op25_repeater/apps/tx/multi_tx.py
+++ b/op25/gr-op25_repeater/apps/tx/multi_tx.py
@@ -31,7 +31,7 @@ import sys
 import os
 import math
 import json
-from gnuradio import gr, gru, audio, eng_notation
+from gnuradio import gr, audio, eng_notation
 from gnuradio import filter, blocks, analog, digital
 from gnuradio.eng_option import eng_option
 from optparse import OptionParser
diff --git a/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py b/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py
index 6d7c812..6962a5f 100755
--- a/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py
+++ b/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py
@@ -30,7 +30,7 @@ P25 C4FM pre-modulation block
 with additions for RRC (for dmr/ysf) and dstar gmsk
 """
 
-from gnuradio import gr, gru, eng_notation
+from gnuradio import gr, eng_notation
 from gnuradio.digital import modulation_utils
 from gnuradio import filter, digital, blocks
 from gnuradio.eng_option import eng_option
diff --git a/op25/gr-op25_repeater/apps/tx/unpack.py b/op25/gr-op25_repeater/apps/tx/unpack.py
index 7cbf05b..5e0e84e 100755
--- a/op25/gr-op25_repeater/apps/tx/unpack.py
+++ b/op25/gr-op25_repeater/apps/tx/unpack.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-from gnuradio import gr, gru, audio, eng_notation, blocks
+from gnuradio import gr, audio, eng_notation, blocks
 from gnuradio.eng_option import eng_option
 from optparse import OptionParser
 
diff --git a/op25/gr-op25_repeater/apps/util/arb-resample.py b/op25/gr-op25_repeater/apps/util/arb-resample.py
index 56a762f..7f99561 100755
--- a/op25/gr-op25_repeater/apps/util/arb-resample.py
+++ b/op25/gr-op25_repeater/apps/util/arb-resample.py
@@ -2,7 +2,7 @@
 
 import sys
 import math
-from gnuradio import gr, gru, audio, eng_notation, filter, blocks
+from gnuradio import gr, audio, eng_notation, filter, blocks
 from gnuradio import analog, digital
 from gnuradio.eng_option import eng_option
 from optparse import OptionParser
diff --git a/op25/gr-op25_repeater/apps/util/cqpsk-demod-file.py b/op25/gr-op25_repeater/apps/util/cqpsk-demod-file.py
index 051ddf0..09d5f38 100755
--- a/op25/gr-op25_repeater/apps/util/cqpsk-demod-file.py
+++ b/op25/gr-op25_repeater/apps/util/cqpsk-demod-file.py
@@ -16,7 +16,7 @@
 import sys
 import os
 import math
-from gnuradio import gr, gru, audio, eng_notation
+from gnuradio import gr, audio, eng_notation
 from gnuradio import filter, blocks, analog, digital
 from gnuradio.eng_option import eng_option
 from optparse import OptionParser