diff --git a/changelog.md b/changelog.md
index 543e1333051..6c338b9d231 100644
--- a/changelog.md
+++ b/changelog.md
@@ -53,7 +53,8 @@
    * Fix infinite recursion in SUF with [hides] and [filter_vision]. (Issue#1389)
  ### Miscellaneous and bug fixes
    * Fixed :droid's arguments not all being optional (Issue#4308)
-   * Ported the "expand-terrain-macros", "wmlflip" and "wmlparser" tools to Python 3
+   * Ported the "expand-terrain-macros", "wmlflip", "wmlparser" and "umc-dev/build/update_version"
+     tools to Python 3
    * It's now possible to chat with oneself in SP campaigns. Chat is shown in replays. (Issue#1111)
    * Removed unused "scoutDefault", "journeylifter", "wescamp_import" and "wmlvalidator" Python tools
    * Fixed wmlscope not correctly performing expansion of square braces in filenames in some conditions
diff --git a/utils/umc_dev/build/update_version b/utils/umc_dev/build/update_version
old mode 100644
new mode 100755
index ff3fa86dd75..22669589b08
--- a/utils/umc_dev/build/update_version
+++ b/utils/umc_dev/build/update_version
@@ -1,25 +1,27 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 import os, sys, shutil
 base_path = os.path.dirname(os.path.realpath(__file__))
-usage = "usage: update_version current_version new_version \ne.g.: update_version 2.0.0 2.0.1"
-files = ["org.wesnoth.dependencies.feature/feature.xml",	"org.wesnoth.feature/category.xml",	"org.wesnoth.feature/feature.xml",
-"org.wesnoth.ui/META-INF/MANIFEST.MF","org.wesnoth/META-INF/MANIFEST.MF", "org.wesnoth/org.wesnoth.product"]
+usage = """usage: update_version current_version new_version
+e.g.: update_version 2.0.0 2.0.1"""
+files = ["org.wesnoth.dependencies.feature/feature.xml",
+         "org.wesnoth.feature/category.xml",
+         "org.wesnoth.feature/feature.xml",
+         "org.wesnoth.ui/META-INF/MANIFEST.MF",
+         "org.wesnoth/META-INF/MANIFEST.MF",
+         "org.wesnoth/org.wesnoth.product"]
 
 if len(sys.argv) < 3:
-    print usage
+    print(usage)
 else:
-    print "Replacing version ", sys.argv[1], " with ", sys.argv[2], "..."
+    print("Replacing version ", sys.argv[1], " with ", sys.argv[2], "...")
     stext = sys.argv[1] + ".qualifier"
     rtext = sys.argv[2] + ".qualifier"
     for file in files:
         sourcePath = os.path.join(os.path.join(base_path, ".."), file)
         targetPath = os.path.join(os.path.join(base_path, ".."), file + ".tmp")
         
-        print "Processing: ", sourcePath
-        input = open(sourcePath)
-        output = open(targetPath, "wb")
-        for s in input.xreadlines():
-            output.write(s.replace(stext, rtext))
-        input.close()
-        output.close()
+        print("Processing: ", sourcePath)
+        with open(sourcePath) as infile, open(targetPath, "w") as outfile:
+            for line in infile:
+                outfile.write(line.replace(stext, rtext))
         shutil.move (targetPath, sourcePath)