diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 07506a745ce..86ecf72ebf0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,7 +8,7 @@ variables:
   FF_SCRIPT_SECTIONS: 'true'
   JUNIT_OUTPUT: 'true'
   ECR_REGISTRY: '${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com'
-  IDP_CI_SHA: 'sha256:0cea6ebf8fa4d693177f46ae9a8c24e6030245f3c795753269b7910178d5cfdd'
+  IDP_CI_SHA: 'sha256:5c4953f8efba18b7a6d6a9a961cb77ba7143059cbb2176499432b4275fbe67db'
   PKI_IMAGE_TAG: 'main'
   DASHBOARD_IMAGE_TAG: 'main'
 
diff --git a/.ruby-version b/.ruby-version
index bea438e9ade..a0891f563f3 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.1
+3.3.4
diff --git a/Gemfile.lock b/Gemfile.lock
index 574d81585b3..ce14502c491 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -459,7 +459,7 @@ GEM
       openssl (> 2.0, < 3.1)
     orm_adapter (0.5.0)
     parallel (1.25.1)
-    parser (3.3.3.0)
+    parser (3.3.4.2)
       ast (~> 2.4.1)
       racc
     pg (1.5.6)
@@ -500,7 +500,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     raabro (1.4.0)
-    racc (1.8.0)
+    racc (1.8.1)
     rack (3.0.11)
     rack-cors (2.0.2)
       rack (>= 2.0.0)
@@ -876,7 +876,7 @@ DEPENDENCIES
   zxcvbn (= 0.1.9)
 
 RUBY VERSION
-   ruby 3.3.1p55
+   ruby 3.3.4p94
 
 BUNDLED WITH
    2.5.6
diff --git a/dockerfiles/idp_ci.Dockerfile b/dockerfiles/idp_ci.Dockerfile
index b9b19bdbbdd..d09f0814808 100644
--- a/dockerfiles/idp_ci.Dockerfile
+++ b/dockerfiles/idp_ci.Dockerfile
@@ -1,4 +1,4 @@
-FROM public.ecr.aws/docker/library/ruby:3.3.1-bullseye
+FROM public.ecr.aws/docker/library/ruby:3.3.4-bullseye
 
 ENV NODE_MAJOR 20
 
diff --git a/dockerfiles/idp_prod.Dockerfile b/dockerfiles/idp_prod.Dockerfile
index b006f4e3a2f..fb784d70a8f 100644
--- a/dockerfiles/idp_prod.Dockerfile
+++ b/dockerfiles/idp_prod.Dockerfile
@@ -4,7 +4,7 @@
 # avoid having build-essential and the large-files token be in the
 # main image.
 #########################################################################
-FROM ruby:3.3.1-slim as builder
+FROM ruby:3.3.4-slim as builder
 
 # Set environment variables
 ENV RAILS_ROOT /app
@@ -136,7 +136,7 @@ RUN openssl req -x509 -sha256 -nodes -newkey rsa:2048 -days 1825 \
 #########################################################################
 # This is the main image.
 #########################################################################
-FROM ruby:3.3.1-slim
+FROM ruby:3.3.4-slim
 
 # Set environment variables
 ENV RAILS_ROOT /app
diff --git a/dockerfiles/idp_review_app.Dockerfile b/dockerfiles/idp_review_app.Dockerfile
index dc41e146280..ba8b4cbbb3c 100644
--- a/dockerfiles/idp_review_app.Dockerfile
+++ b/dockerfiles/idp_review_app.Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.3.1-slim
+FROM ruby:3.3.4-slim
 
 # Set environment variables
 ENV RAILS_ROOT /app