diff --git a/DQMServices/Components/scripts/dqmiodumpmetadata.py b/DQMServices/Components/scripts/dqmiodumpmetadata.py
index feffbc1115e20..c02d6577e030e 100755
--- a/DQMServices/Components/scripts/dqmiodumpmetadata.py
+++ b/DQMServices/Components/scripts/dqmiodumpmetadata.py
@@ -14,13 +14,13 @@
 
 f = uproot.open(args.filename)
 things = f.keys()
-if b'Indices;1' in things:
-  indices = f[b'Indices']
-  runs = indices.array(b"Run")
-  lumis = indices.array(b"Lumi")
-  firstindex = indices.array(b"FirstIndex")
-  lastindex = indices.array(b"LastIndex")
-  types = indices.array(b"Type")
+if 'Indices;1' in things:
+  indices = f['Indices']
+  runs = indices['Run'].array()
+  lumis = indices['Lumi'].array()
+  firstindex = indices['FirstIndex'].array()
+  lastindex = indices['LastIndex'].array()
+  types = indices['Type'].array()
 
   counts = defaultdict(lambda: 0)
   for run, lumi, first, last, type in zip(runs, lumis, firstindex, lastindex, types):
@@ -54,5 +54,3 @@ def showrow():
 
 else:
   print("This does not look like DQMIO data.")
-
-
diff --git a/DQMServices/Components/scripts/dqmiolistmes.py b/DQMServices/Components/scripts/dqmiolistmes.py
index 9e462a0240708..c03f82db56613 100755
--- a/DQMServices/Components/scripts/dqmiolistmes.py
+++ b/DQMServices/Components/scripts/dqmiolistmes.py
@@ -19,13 +19,13 @@
 
 f = uproot.open(args.filename)
 things = f.keys()
-if b'Indices;1' in things:
-  indices = f[b'Indices']
-  runs = indices.array(b"Run")
-  lumis = indices.array(b"Lumi")
-  firstindex = indices.array(b"FirstIndex")
-  lastindex = indices.array(b"LastIndex")
-  types = indices.array(b"Type")
+if 'Indices;1' in things:
+  indices = f['Indices']
+  runs = indices['Run'].array()
+  lumis = indices['Lumi'].array()
+  firstindex = indices['FirstIndex'].array()
+  lastindex = indices['LastIndex'].array()
+  types = indices['Type'].array()
 
   # If run is not provided, print all available runs in a given file.
   if args.r == None or args.r < 0:
@@ -36,25 +36,24 @@
     exit()
 
   treenames = [ # order matters!
-    b"Ints",
-    b"Floats",
-    b"Strings",
-    b"TH1Fs",
-    b"TH1Ss",
-    b"TH1Ds",
-    b"TH2Fs",
-    b"TH2Ss",
-    b"TH2Ds",
-    b"TH3Fs",
-    b"TProfiles",
-    b"TProfile2Ds"
+    "Ints",
+    "Floats",
+    "Strings",
+    "TH1Fs",
+    "TH1Ss",
+    "TH1Ds",
+    "TH2Fs",
+    "TH2Ss",
+    "TH2Ds",
+    "TH3Fs",
+    "TProfiles",
+    "TProfile2Ds"
   ]
-  trees = [f[name][b"FullName"].array() for name in treenames]
+  trees = [f[name]["FullName"].array() for name in treenames]
 
   for run, lumi, first, last, type in zip(runs, lumis, firstindex, lastindex, types):
     if run == args.r and lumi == args.l:
       for i in range(first, int(last + 1)): # In DQMIO both ranges are inclusive
-        print(trees[type][i].decode())
+        print(trees[type][i])
 else:
   print("This does not look like DQMIO data.")
-
diff --git a/DQMServices/Demo/test/runtests.sh b/DQMServices/Demo/test/runtests.sh
index 7d018032a7d38..6c94d32c7b88c 100755
--- a/DQMServices/Demo/test/runtests.sh
+++ b/DQMServices/Demo/test/runtests.sh
@@ -72,7 +72,7 @@ dqmiodumpmetadata.py merged.root | grep -q '4 runs, 12 lumisections'
 rootlist ()
 {  python3 -c '
 import uproot
-for k in uproot.open("'"$1"'").allkeys(): print(k.decode())'
+for k in uproot.open("'"$1"'").keys(): print(k)'
 }
 
 # we need to exclude MEs filled on run and lumi boundaries, since the split job *does* see a different number of begin/end run/lumi transitions.