diff --git a/templates/capsule/editors/email_editor.html.twig b/templates/capsule/editors/email_editor.html.twig
index b14f0feb9836648dbbf72ed04959e82ca4feaf80..1f077a475f5f6a44f0d1ce217c0d50529d26a3da 100644
--- a/templates/capsule/editors/email_editor.html.twig
+++ b/templates/capsule/editors/email_editor.html.twig
@@ -1,6 +1,7 @@
<!DOCTYPE html>
<html>
<head>
+ <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
<meta charset="UTF-8">
<title>
{{ 'editors.add.user.email.title'|trans }}
diff --git a/templates/capsule/editors/email_pending_editor.html.twig b/templates/capsule/editors/email_pending_editor.html.twig
index d1b5513c4cc8569e7ef15d4c81003a9e9a4aaaf3..528cb8124672a6b45f800145a9fbb78205ee48f2 100644
--- a/templates/capsule/editors/email_pending_editor.html.twig
+++ b/templates/capsule/editors/email_pending_editor.html.twig
@@ -1,6 +1,7 @@
<!DOCTYPE html>
<html>
<head>
+ <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
<meta charset="UTF-8">
<title>
{{ 'editors.add.pending_editor.email.title'|trans }}
@@ -22,4 +23,4 @@
</div>
</div>
</body>
-</html>
\ No newline at end of file
+</html>
diff --git a/templates/layout.html.twig b/templates/layout.html.twig
index a2ce787abb4e1eb546afc3698fd252ebbcbbcb19..add75b3f3246dc9ad96b3c4254fd15ec1ea2ce66 100644
--- a/templates/layout.html.twig
+++ b/templates/layout.html.twig
@@ -2,6 +2,7 @@
<html>
<head>
<meta charset="UTF-8">
+ <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
<title>{% block title %}MemoRekall{% endblock %}</title>
{% block stylesheets %}
@@ -47,4 +48,4 @@
{% block body %}{% endblock %}
{% block script %}{% endblock %}
</body>
-</html>
\ No newline at end of file
+</html>
diff --git a/templates/project/project_view.html.twig b/templates/project/project_view.html.twig
index 8d10ed9cfa35a469a21454d53df21169d0d4e567..09051536339585aa525250e763bdbd0ddb3d4ff9 100644
--- a/templates/project/project_view.html.twig
+++ b/templates/project/project_view.html.twig
@@ -2,6 +2,7 @@
<html>
<head>
<meta charset="UTF-8">
+ <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
<title>{% block title %}MemoRekall{% endblock %}</title>
{% block stylesheets %}