diff --git a/Builds/Test.py b/Builds/Test.py
index 70f53a1d58..8ff129a281 100755
--- a/Builds/Test.py
+++ b/Builds/Test.py
@@ -78,16 +78,16 @@ CMAKE_UNITY_COMBOS = { '' : [['rippled', 'rippled_classic'], CMAKE_UNITY_CONFIGS
 
 if IS_WINDOWS:
     CMAKE_DIR_TARGETS = { ('msvc' + unity,) : targets for unity, targets in
-        CMAKE_UNITY_COMBOS.iteritems() }
+        CMAKE_UNITY_COMBOS.items() }
 elif IS_OS_X:
     CMAKE_DIR_TARGETS = { (build + unity,) : targets
                    for build in ['debug', 'release']
-                   for unity, targets in CMAKE_UNITY_COMBOS.iteritems() }
+                   for unity, targets in CMAKE_UNITY_COMBOS.items() }
 else:
     CMAKE_DIR_TARGETS = { (cc + "." + build + unity,) : targets
                    for cc in ['gcc', 'clang']
                    for build in ['debug', 'release', 'coverage', 'profile']
-                   for unity, targets in CMAKE_UNITY_COMBOS.iteritems() }
+                   for unity, targets in CMAKE_UNITY_COMBOS.items() }
 
 # list of tuples of all possible options
 if IS_WINDOWS or IS_OS_X:
@@ -450,7 +450,7 @@ def main():
             ARGS.build_option = list(ARGS.extra_args)
 
         for args in generator_options:
-            for build_dirs, (build_targets, build_configs) in build_dir_targets.iteritems():
+            for build_dirs, (build_targets, build_configs) in build_dir_targets.items():
                 if not build_dirs:
                     build_dirs = ('default',)
                 if not build_targets:
diff --git a/SConstruct b/SConstruct
index f1409d3301..619c6c8d79 100644
--- a/SConstruct
+++ b/SConstruct
@@ -422,7 +422,7 @@ def get_libs(lib, static):
     try:
         cmd = ['pkg-config', '--static', '--libs', lib]
         libs = subprocess.check_output(cmd,
-                                       stderr=subprocess.STDOUT).strip()
+                                       stderr=subprocess.STDOUT).strip().decode("utf-8")
         all_libs = [l[2:] for l in libs.split() if l.startswith('-l')]
         if not static:
             return ([], all_libs)
@@ -1162,7 +1162,7 @@ for tu_style in ['classic', 'unity']:
                 os.path.join(variant_dir, 'proto') :
                     os.path.join (build_dir, 'proto'),
                 }
-            for dest, source in variant_dirs.iteritems():
+            for dest, source in variant_dirs.items():
                 env.VariantDir(dest, source, duplicate=0)
 
             object_builder = ObjectBuilder(env, variant_dirs)
@@ -1265,7 +1265,7 @@ for tu_style in ['classic', 'unity']:
                     [object_builder.env] + object_builder.child_envs + [base],
                     dest_file='build.ninja')
 
-for key, value in aliases.iteritems():
+for key, value in aliases.items():
     env.Alias(key, value)
 
 vcxproj = base.VSProject(
@@ -1306,6 +1306,6 @@ def do_count(target, source, env):
     lines = 0
     for f in testfiles:
         lines = lines + sum(1 for line in open(f))
-    print "Total unit test lines: %d" % lines
+    print ("Total unit test lines: %d" % lines)
 
 PhonyTargets(env, count = do_count)
diff --git a/src/ripple/beast/site_scons/Beast.py b/src/ripple/beast/site_scons/Beast.py
index 5b2fe849a4..315cec00c3 100644
--- a/src/ripple/beast/site_scons/Beast.py
+++ b/src/ripple/beast/site_scons/Beast.py
@@ -111,7 +111,7 @@ def printChildren(target):
 def variantFile(path, variant_dirs):
     '''Returns the path to the corresponding dict entry in variant_dirs'''
     path = str(path)
-    for dest, source in variant_dirs.iteritems():
+    for dest, source in variant_dirs.items():
         common = os.path.commonprefix([path, source])
         if common == source:
             return os.path.join(dest, path[len(common)+1:])
diff --git a/src/ripple/beast/site_scons/site_tools/VSProject.py b/src/ripple/beast/site_scons/site_tools/VSProject.py
index 6a8ebe2e6d..41f6ed56d1 100644
--- a/src/ripple/beast/site_scons/site_tools/VSProject.py
+++ b/src/ripple/beast/site_scons/site_tools/VSProject.py
@@ -816,12 +816,12 @@ class _ProjectGenerator(object):
     def build(self):
         try:
             self.project_file = open(str(self.project_node), 'wb')
-        except IOError, detail:
+        except (IOError, detail):
             raise SCons.Errors.InternalError('Unable to open "' +
                 str(self.project_node) + '" for writing:' + str(detail))
         try:
             self.filters_file = open(str(self.filters_node), 'wb')
-        except IOError, detail:
+        except (IOError, detail):
             raise SCons.Errors.InternalError('Unable to open "' +
                 str(self.filters_node) + '" for writing:' + str(detail))
         self.writeProject()