diff --git a/.env.example b/.env.example
index 3ce4220..df712a3 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,6 @@
+# Web application configuration
+WEB_APP_PORT=5000
+
 # Application configuration
 MAX_CONTENT_LENGTH=3145728
 MAX_PENDING_TIME=600
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 682d53e..6812636 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -129,6 +129,8 @@ jobs:
 
             # create .env
             cat <<EOF > .env
+            WEB_APP_PORT=${{ vars.WEB_APP_PORT }}
+
             MAX_CONTENT_LENGTH=${{ vars.MAX_CONTENT_LENGTH }}
             MAX_PENDING_TIME=${{ vars.MAX_PENDING_TIME }}
             MAX_STORE_TIME=${{ vars.MAX_STORE_TIME }}
diff --git a/compose.dev.yml b/compose.dev.yml
index f095370..abe3a9c 100644
--- a/compose.dev.yml
+++ b/compose.dev.yml
@@ -6,7 +6,7 @@ services:
     restart: always
     command: ["flask", "--app", "aperisolve.app", "run", "--host=0.0.0.0", "--port=5000"]
     ports:
-      - "5000:5000"
+      - "${WEB_APP_PORT:-5000}:5000"
     volumes:
       - ./aperisolve:/app/aperisolve
     depends_on:
diff --git a/compose.yml b/compose.yml
index ea56852..27d24d6 100644
--- a/compose.yml
+++ b/compose.yml
@@ -5,7 +5,7 @@ services:
     container_name: aperisolve-web
     restart: always
     ports:
-      - "5000:5000"
+      - "${WEB_APP_PORT:-5000}:5000"
     volumes:
       - apresults:/app/aperisolve/results
     depends_on: