diff --git a/app/assets/javascripts/hotjar.js b/app/assets/javascripts/hotjar.js
deleted file mode 100644
index 330f426fa..000000000
--- a/app/assets/javascripts/hotjar.js
+++ /dev/null
@@ -1,3 +0,0 @@
-// Hotjar Tracking Code for https://api.app.eva.beta.gouv.fr
-(tarteaucitron.job = tarteaucitron.job || []).push('hotjar');
-tarteaucitron.user.hotjarId = 1981301;tarteaucitron.user.HotjarSv = 6;
diff --git a/app/assets/javascripts/hotjar.js.erb b/app/assets/javascripts/hotjar.js.erb
new file mode 100644
index 000000000..8fc8fb88a
--- /dev/null
+++ b/app/assets/javascripts/hotjar.js.erb
@@ -0,0 +1,6 @@
+// Hotjar Tracking Code for https://api.app.eva.beta.gouv.fr
+<% if ENV['HOTJAR_ID'].present? %>
+tarteaucitron.user.hotjarId = <%= ENV['HOTJAR_ID'] %>;
+tarteaucitron.user.HotjarSv = 6;
+(tarteaucitron.job = tarteaucitron.job || []).push('hotjar');
+<% end %>
diff --git a/app/assets/javascripts/matomo.js b/app/assets/javascripts/matomo.js.erb
similarity index 66%
rename from app/assets/javascripts/matomo.js
rename to app/assets/javascripts/matomo.js.erb
index 2087ad600..b5775a189 100644
--- a/app/assets/javascripts/matomo.js
+++ b/app/assets/javascripts/matomo.js.erb
@@ -1,4 +1,6 @@
 // Matomo Tracking Code for https://api.app.eva.beta.gouv.fr
+<% if ENV['MATOMO_ID'].present? %>
 tarteaucitron.user.matomoHost = 'https://stats.data.gouv.fr/';
-tarteaucitron.user.matomoId = 149;
+tarteaucitron.user.matomoId = <%= ENV['MATOMO_ID'] %>;
 (tarteaucitron.job = tarteaucitron.job || []).push('matomohightrack');
+<% end %>