diff --git a/conf/parser.py b/conf/parser.py
index 66df1af67..7a8d4bc02 100644
--- a/conf/parser.py
+++ b/conf/parser.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2019 Intel Corporation
 
diff --git a/conf/ports.py b/conf/ports.py
index 05ad3a3e3..8f81b4d1f 100644
--- a/conf/ports.py
+++ b/conf/ports.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2019 Intel Corporation
 
diff --git a/conf/route_control.py b/conf/route_control.py
index a4d8c1212..e694a07a1 100755
--- a/conf/route_control.py
+++ b/conf/route_control.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2019 Intel Corporation
 # Copyright 2023 Canonical Ltd.
diff --git a/conf/sim.py b/conf/sim.py
index 66ff223f7..56adff09b 100644
--- a/conf/sim.py
+++ b/conf/sim.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2019 Intel Corporation
 
diff --git a/conf/test_route_control.py b/conf/test_route_control.py
index 78a02f273..ff814e695 100644
--- a/conf/test_route_control.py
+++ b/conf/test_route_control.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2023 Canonical Ltd.
 
diff --git a/conf/utils.py b/conf/utils.py
index f1f4572c0..1efa72983 100644
--- a/conf/utils.py
+++ b/conf/utils.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2019 Intel Corporation