diff --git a/capi-ruby-units/Dockerfile b/capi-ruby-units/Dockerfile
index 8476af1..973e102 100644
--- a/capi-ruby-units/Dockerfile
+++ b/capi-ruby-units/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.2-bookworm
+FROM ruby:3.4-bookworm
 LABEL org.opencontainers.image.authors="CF CAPI team"
 LABEL org.opencontainers.image.url="https://github.com/cloudfoundry/capi-dockerfiles"
 
diff --git a/capi-runtime-ci/Dockerfile b/capi-runtime-ci/Dockerfile
index 902c060..a105589 100644
--- a/capi-runtime-ci/Dockerfile
+++ b/capi-runtime-ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.2-bookworm
+FROM ruby:3.4-bookworm
 LABEL org.opencontainers.image.authors="CF CAPI team"
 LABEL org.opencontainers.image.url="https://github.com/cloudfoundry/capi-dockerfiles"
 
diff --git a/rc-docs/Dockerfile b/rc-docs/Dockerfile
index 57dfc44..fe4b380 100644
--- a/rc-docs/Dockerfile
+++ b/rc-docs/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.2-bookworm
+FROM ruby:3.4-bookworm
 LABEL org.opencontainers.image.authors="CF CAPI team"
 LABEL org.opencontainers.image.url="https://github.com/cloudfoundry/capi-dockerfiles"