diff --git a/tools/apidoc/build-apidoc.sh b/tools/apidoc/build-apidoc.sh
index 33123b31f2b..21cceb0a282 100755
--- a/tools/apidoc/build-apidoc.sh
+++ b/tools/apidoc/build-apidoc.sh
@@ -77,10 +77,10 @@ set -e
      gen_toc_file="`cygpath -w $thisdir`\\gen_toc.py"
      for file in `find . -type f`; do
          echo "Parse file $file";
-         python $gen_toc_file $file;
+         python3 $gen_toc_file $file;
      done
  else
-     python "$thisdir/gen_toc.py" $(find . -type f)
+     python3 "$thisdir/gen_toc.py" $(find . -type f)
  fi
 
  cat generatetoc_include.xsl >> generatetoc.xsl
diff --git a/tools/marvin/mvn-setup.py b/tools/marvin/mvn-setup.py
index 5aa251b9077..a6b17e56ed0 100755
--- a/tools/marvin/mvn-setup.py
+++ b/tools/marvin/mvn-setup.py
@@ -42,7 +42,7 @@ def replaceVersion(fname, version):
 
 def runSetupScript(args):
     """Invoke setup.py with the provided arguments"""
-    cmd = ['python', setupScript] + args
+    cmd = ['python3', setupScript] + args
     exitCode = subprocess.call(cmd)
     return exitCode
 
diff --git a/tools/marvin/pom.xml b/tools/marvin/pom.xml
index 55c7554946e..2d4c71e00c0 100644
--- a/tools/marvin/pom.xml
+++ b/tools/marvin/pom.xml
@@ -86,7 +86,7 @@
                         </goals>
                         <configuration>
                             <workingDirectory>${exec.workingdir}</workingDirectory>
-                            <executable>python</executable>
+                            <executable>python3</executable>
                             <arguments>
                                 <argument>mvn-setup.py</argument>
                                 <argument>${project.version}</argument>
@@ -140,7 +140,7 @@
                                 </goals>
                                 <configuration>
                                     <workingDirectory>${exec.workingdir}</workingDirectory>
-                                    <executable>python</executable>
+                                    <executable>python3</executable>
                                     <arguments>
                                         <argument>mvn-setup.py</argument>
                                         <argument>${project.version}</argument>
@@ -209,7 +209,7 @@
                                 </goals>
                                 <configuration>
                                     <workingDirectory>${basedir}/marvin</workingDirectory>
-                                    <executable>python</executable>
+                                    <executable>python3</executable>
                                     <arguments>
                                         <argument>deployAndRun.py</argument>
                                         <argument>-c</argument>