diff --git a/CHANGES.txt b/CHANGES.txt
index f483093f..34667b68 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,7 @@
+5.5.1 (XXXX)
+- Updated docker images for vulnerability fixes.
+- Updated go-split-commons version.
+
 5.5.0 (Dec 12, 2023)
  - Added support for Flag Sets on Split Proxy and Synchronizer, which enables SDKs to interacting with the flag sets features (more details in our documentation):
     - Updated Proxy endpoints used by SDKs to fetch flags have been updated to handle any SDKs downloading flags in certain flag sets.
diff --git a/docker/Dockerfile.proxy b/docker/Dockerfile.proxy
index 0c7e9131..e18039ca 100644
--- a/docker/Dockerfile.proxy
+++ b/docker/Dockerfile.proxy
@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.21.3-alpine3.18 AS builder
+FROM golang:1.21.5-alpine3.19 AS builder
 
 ARG EXTRA_BUILD_ARGS
 
@@ -16,7 +16,7 @@ COPY . .
 RUN make clean split-proxy entrypoints EXTRA_BUILD_ARGS="${EXTRA_BUILD_ARGS}"
 
 # Runner stage
-FROM alpine:3.18.4 AS runner
+FROM alpine:3.19.0 AS runner
 
 RUN apk add bash
 
diff --git a/docker/Dockerfile.synchronizer b/docker/Dockerfile.synchronizer
index b0854347..e2255d64 100644
--- a/docker/Dockerfile.synchronizer
+++ b/docker/Dockerfile.synchronizer
@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.21.3-alpine3.18 AS builder
+FROM golang:1.21.5-alpine3.19 AS builder
 
 ARG EXTRA_BUILD_ARGS
 
@@ -16,7 +16,7 @@ COPY . .
 RUN make clean split-sync entrypoints EXTRA_BUILD_ARGS="${EXTRA_BUILD_ARGS}"
 
 # Runner stage
-FROM alpine:3.18.4 AS runner
+FROM alpine:3.19.0 AS runner
 
 RUN apk add bash
 
diff --git a/go.mod b/go.mod
index fd37ae1d..4cb0d4c9 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/google/uuid v1.3.0
 	github.com/splitio/gincache v1.0.1
-	github.com/splitio/go-split-commons/v5 v5.1.0
+	github.com/splitio/go-split-commons/v5 v5.1.1-0.20231215145627-50f20bea9ccd
 	github.com/splitio/go-toolkit/v5 v5.3.2
 	github.com/stretchr/testify v1.8.4
 	go.etcd.io/bbolt v1.3.6
diff --git a/go.sum b/go.sum
index 5bf34df0..77f97572 100644
--- a/go.sum
+++ b/go.sum
@@ -92,6 +92,8 @@ github.com/splitio/gincache v1.0.1 h1:dLYdANY/BqH4KcUMCe/LluLyV5WtuE/LEdQWRE06IX
 github.com/splitio/gincache v1.0.1/go.mod h1:CcgJDSM9Af75kyBH0724v55URVwMBuSj5x1eCWIOECY=
 github.com/splitio/go-split-commons/v5 v5.1.0 h1:mki1235gjXwuxcXdv/bKVduX1Lv09uXJogds+BspqSM=
 github.com/splitio/go-split-commons/v5 v5.1.0/go.mod h1:9vAZrlhKvhensyRC11hyVFdgLIBrkX9D5vdYc9qB13w=
+github.com/splitio/go-split-commons/v5 v5.1.1-0.20231215145627-50f20bea9ccd h1:SyJzAn3pLbMFafPEzOliYcA4RojNiFk+Sdn0H5cKSVQ=
+github.com/splitio/go-split-commons/v5 v5.1.1-0.20231215145627-50f20bea9ccd/go.mod h1:9vAZrlhKvhensyRC11hyVFdgLIBrkX9D5vdYc9qB13w=
 github.com/splitio/go-toolkit/v5 v5.3.2 h1:Yy9YBcHRmK5WVZjeA/klLGEdF38xpsL1ejnC3ro8a2M=
 github.com/splitio/go-toolkit/v5 v5.3.2/go.mod h1:xYhUvV1gga9/1029Wbp5pjnR6Cy8nvBpjw99wAbsMko=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=