diff --git a/Dockerfile b/Dockerfile
index ad5a630..20d1f49 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-FROM ruby:3.3
+FROM ruby:3.4
 
 LABEL "repository"="https://github.com/zerocracy/pages-action"
 LABEL "maintainer"="Yegor Bugayenko"