diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 5e1f17a..67b1a83 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -47,7 +47,10 @@ jobs:
 
       - name: Build Web image
         run: |
-          docker build -f web/Dockerfile -t "${REGISTRY_HOST}/${WEB_IMAGE}:${IMAGE_TAG}" .
+          APP_VERSION="1.0.$(git rev-list --count HEAD)"
+          docker build -f web/Dockerfile \
+            --build-arg APP_VERSION="${APP_VERSION}" \
+            -t "${REGISTRY_HOST}/${WEB_IMAGE}:${IMAGE_TAG}" .
 
       - name: Build CV cleanup job image
         run: |
diff --git a/docker-compose/.env.template b/docker-compose/.env.template
index 3e24c53..95646d1 100644
--- a/docker-compose/.env.template
+++ b/docker-compose/.env.template
@@ -7,6 +7,10 @@
 # For local dev this is ignored (docker-compose.override.yml builds images locally).
 IMAGE_TAG=staging
 
+# Application version displayed in the web UI footer.
+# CI sets this automatically to 1.0.<git-commit-count> at build time.
+APP_VERSION=1.0.0
+
 # Volume base paths — controls where logs and uploaded files are stored on the host.
 # Portainer (staging/prod): leave unset to use the /opt/myai defaults.
 # Local dev: set to relative paths so logs and files land in the repo tree.
diff --git a/docker-compose/docker-compose.yml b/docker-compose/docker-compose.yml
index 87bc49f..3b617b8 100644
--- a/docker-compose/docker-compose.yml
+++ b/docker-compose/docker-compose.yml
@@ -263,6 +263,7 @@ services:
       - ASPNETCORE_URLS=${ASPNETCORE_URLS:-http://+:8080}
       - APP_ENVIRONMENT_NAME=${APP_ENVIRONMENT_NAME:-myai.staging}
 
+      - APP_VERSION=${APP_VERSION:-unknown}
       - Site__Mode=${Site__Mode:-Normal}
     networks:
       - myai-network
diff --git a/web/Dockerfile b/web/Dockerfile
index 49d964d..aa56baf 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -13,6 +13,8 @@ FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS final
 WORKDIR /app
 EXPOSE 8080
 ENV ASPNETCORE_URLS=http://0.0.0.0:8080
+ARG APP_VERSION=1.0.0
+ENV APP_VERSION=${APP_VERSION}
 
 COPY --from=build /app/publish .
 ENTRYPOINT ["dotnet", "web.dll"]
\ No newline at end of file
diff --git a/web/Program.cs b/web/Program.cs
index c14b1dd..9e4777b 100644
--- a/web/Program.cs
+++ b/web/Program.cs
@@ -14,6 +14,9 @@ var app = builder.Build();
 
 app.UseMiddleware<SiteModeMiddleware>();
 
+app.MapGet("/version", (IConfiguration config) =>
+    Results.Json(new { version = config["APP_VERSION"] ?? "unknown" }));
+
 // Static site
 app.UseDefaultFiles();
 app.UseStaticFiles();
diff --git a/web/wwwroot/css/myai.css b/web/wwwroot/css/myai.css
index 1f9b56b..b1b060b 100644
--- a/web/wwwroot/css/myai.css
+++ b/web/wwwroot/css/myai.css
@@ -607,6 +607,13 @@ img {
     flex-wrap: wrap
 }
 
+.app-version {
+    font-size: .7rem;
+    color: var(--muted);
+    opacity: .5;
+    font-family: monospace
+}
+
 .cookie-overlay {
     position: fixed;
     left: 0;
diff --git a/web/wwwroot/cv-matcher/index.html b/web/wwwroot/cv-matcher/index.html
index 2b43d29..b1fce85 100644
--- a/web/wwwroot/cv-matcher/index.html
+++ b/web/wwwroot/cv-matcher/index.html
@@ -186,6 +186,7 @@
                     <a data-legal="privacy" href="/legal/privacy-en.html" target="_blank" data-i18n="legal.privacy">Privacy</a>
                     <a data-legal="cookies" href="/legal/cookies-en.html" target="_blank" data-i18n="legal.cookies">Cookies</a>
                 </div>
+                <span id="app-version" class="app-version"></span>
                 <a href="#top" class="back-to-top btn btn-dark btn-sm shadow" data-i18n="footer.top">Back to top</a>
             </div>
         </footer>
diff --git a/web/wwwroot/index.html b/web/wwwroot/index.html
index ea34c69..7fd7a86 100644
--- a/web/wwwroot/index.html
+++ b/web/wwwroot/index.html
@@ -189,6 +189,7 @@
                     <a data-legal="privacy" href="/legal/privacy-en.html" target="_blank" data-i18n="legal.privacy">Privacy</a>
                     <a data-legal="cookies" href="/legal/cookies-en.html" target="_blank" data-i18n="legal.cookies">Cookies</a>
                 </div>
+                <span id="app-version" class="app-version"></span>
                 <a href="#top" class="back-to-top btn btn-dark btn-sm shadow" data-i18n="footer.top">Back to top</a>
             </div>
         </footer>
diff --git a/web/wwwroot/js/main.js b/web/wwwroot/js/main.js
index 8871a48..3cd183e 100644
--- a/web/wwwroot/js/main.js
+++ b/web/wwwroot/js/main.js
@@ -262,6 +262,13 @@
 	}
 
 	$('#year').text(new Date().getFullYear());
+
+	$.getJSON('/version').done(function (data) {
+		if (data && data.version) {
+			$('#app-version').text('v' + data.version);
+		}
+	});
+
 	applyLanguage(currentLang());
 	$('.lang-flag').on('click', function () {
 		applyLanguage($(this).data('lang'));