diff --git a/Dockerfile b/Dockerfile
index a87f0556..ddee7d86 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 # ==============================================================================
 # Base image with Rust toolchain (Alpine - more reliable than Debian)
 # ==============================================================================
-FROM alpine:3.22 AS rust-base
+FROM alpine:3.24 AS rust-base
 
 # Install system dependencies
 # - protoc/protobuf-dev: Required for prost-build (proto compilation in build.rs)
@@ -359,7 +359,7 @@ CMD ["./confidence-cloudflare-resolver/deployer/script.sh"]
 # ==============================================================================
 # OpenFeature Provider (TypeScript) - Build and test
 # ==============================================================================
-FROM node:22-alpine AS openfeature-provider-js-base
+FROM node:26-alpine AS openfeature-provider-js-base
 
 # Install protoc for proto generation
 RUN apk add --no-cache protobuf-dev protoc make
@@ -474,7 +474,7 @@ COPY --from=openfeature-provider-js.pack /app/package.tgz /package.tgz
 # ==============================================================================
 # OpenFeature Provider (Go) - Build and test
 # ==============================================================================
-FROM golang:1.25-alpine AS openfeature-provider-go-base
+FROM golang:1.27-alpine AS openfeature-provider-go-base
 
 # Install make (needed for Makefile targets)
 RUN apk add --no-cache make
@@ -499,7 +499,7 @@ ENV IN_DOCKER_BUILD=1
 # ==============================================================================
 # Validate WASM sync for Go Provider
 # ==============================================================================
-FROM alpine:3.22 AS openfeature-provider-go.validate-wasm
+FROM alpine:3.24 AS openfeature-provider-go.validate-wasm
 
 # Install diffutils for cmp command
 RUN apk add --no-cache diffutils
@@ -535,7 +535,7 @@ RUN set -e; \
 # ==============================================================================
 # Validate committed event engine WASM matches a fresh build (Go go:embed)
 # ==============================================================================
-FROM alpine:3.22 AS openfeature-provider-go.validate-event-wasm
+FROM alpine:3.24 AS openfeature-provider-go.validate-event-wasm
 
 RUN apk add --no-cache diffutils
 
@@ -590,7 +590,7 @@ RUN make lint
 # OpenFeature Provider (Ruby) - Build and test
 # ==============================================================================
 # Ruby 3.4 is the floor for openfeature-sdk >= 0.6.0.
-FROM ruby:3.4-alpine AS openfeature-provider-ruby-base
+FROM ruby:4.0-alpine AS openfeature-provider-ruby-base
 
 # Install build dependencies
 RUN apk add --no-cache make git build-base openssl-dev
@@ -653,7 +653,7 @@ RUN --mount=type=secret,id=rubygem_api_key \
 # ==============================================================================
 # OpenFeature Provider (Python) - Build and test
 # ==============================================================================
-FROM python:3.11-slim AS openfeature-provider-python-base
+FROM python:3.14-slim AS openfeature-provider-python-base
 
 # Install protobuf and build dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -794,7 +794,7 @@ RUN --mount=type=secret,id=crates_io_token \
 # ==============================================================================
 # OpenFeature Provider (Java) - Build and test
 # ==============================================================================
-FROM eclipse-temurin:17-jdk AS openfeature-provider-java-base
+FROM eclipse-temurin:25-jdk AS openfeature-provider-java-base
 
 # Install Maven and protobuf (Debian-based for glibc compatibility)
 RUN apt-get update && apt-get install -y \
diff --git a/mock-support-server/Dockerfile b/mock-support-server/Dockerfile
index 4a8d4ae3..547f71a0 100644
--- a/mock-support-server/Dockerfile
+++ b/mock-support-server/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.25-alpine3.22 AS build
+FROM golang:1.26-alpine3.22 AS build
 WORKDIR /src/mock-support-server
 
 # Copy module files and download dependencies (cached)
@@ -16,7 +16,7 @@ RUN --mount=type=cache,target=/go/pkg/mod \
     --mount=type=cache,target=/root/.cache/go-build \
     CGO_ENABLED=0 go build -o /out/mock-support-server .
 
-FROM alpine:3.22
+FROM alpine:3.24
 COPY --from=build /out/mock-support-server /mock-support-server
 COPY data/account_id /data/account_id
 COPY data/resolver_state_current.pb /data/resolver_state_current.pb
diff --git a/openfeature-provider/go/bench/Dockerfile b/openfeature-provider/go/bench/Dockerfile
index bd9c696b..92e01b8f 100644
--- a/openfeature-provider/go/bench/Dockerfile
+++ b/openfeature-provider/go/bench/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.25-alpine3.22 AS build
+FROM golang:1.26-alpine3.22 AS build
 WORKDIR /src
 
 # Prepare module files in correct relative locations to satisfy the replace directive
@@ -19,7 +19,7 @@ RUN --mount=type=cache,target=/go/pkg/mod \
     CGO_ENABLED=0 \
     go build -C ./openfeature-provider/go/bench -o /out/bench .
 
-FROM alpine:3.22
+FROM alpine:3.24
 RUN apk add --no-cache ca-certificates
 COPY --from=build /out/bench /bench
 ENTRYPOINT ["/bench"]
diff --git a/openfeature-provider/js/bench/Dockerfile b/openfeature-provider/js/bench/Dockerfile
index 011ae1f0..d106ab9e 100644
--- a/openfeature-provider/js/bench/Dockerfile
+++ b/openfeature-provider/js/bench/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:22-alpine3.22
+FROM node:26-alpine3.22
 
 WORKDIR /app