diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1e0700a..099c9ed 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,6 +13,8 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           cache: false
-          go-version: '^1.23'
+          go-version: '^1.24'
       - uses: actions/checkout@v4
       - uses: n8maninger/action-golang-test@v2
+        with:
+          args: "-race;-timeout=30m"
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 438d6a7..bcb5784 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,6 @@ ethereal
 
 # Vim
 *.sw?
+
+# IntelliJ + friends.
+.idea/
\ No newline at end of file
diff --git a/README.md b/README.md
index 30169d0..105331c 100644
--- a/README.md
+++ b/README.md
@@ -1093,7 +1093,7 @@ $ ethereal version
 
 ## Maintainers
 
-Jim McDonald: [@mcdee](https://github.com/mcdee).
+Chris Berry: [@Bez625](https://github.com/bez625).
 
 ## Contribute
 
diff --git a/cmd/version.go b/cmd/version.go
index c91c0dc..286d39d 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -30,7 +30,7 @@ var versionCmd = &cobra.Command{
 
     ethereal version.`,
 	Run: func(_ *cobra.Command, _ []string) {
-		fmt.Println("2.11.5")
+		fmt.Println("2.12.0")
 		if viper.GetBool("verbose") {
 			buildInfo, ok := dbg.ReadBuildInfo()
 			if ok {
diff --git a/go.mod b/go.mod
index aab9def..6cbb074 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ toolchain go1.23.2
 
 require (
 	github.com/antlr4-go/antlr/v4 v4.13.1
-	github.com/attestantio/go-eth2-client v0.24.1
+	github.com/attestantio/go-eth2-client v0.27.1
 	github.com/attestantio/go-execution-client v0.10.2
 	github.com/ethereum/go-ethereum v1.15.6
 	github.com/miekg/dns v1.1.63
diff --git a/go.sum b/go.sum
index edf30e7..653fbcb 100644
--- a/go.sum
+++ b/go.sum
@@ -12,8 +12,8 @@ github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156 h1:eMwmnE/GDgah
 github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
 github.com/antlr4-go/antlr/v4 v4.13.1 h1:SqQKkuVZ+zWkMMNkjy5FZe5mr5WURWnlpmOuzYWrPrQ=
 github.com/antlr4-go/antlr/v4 v4.13.1/go.mod h1:GKmUxMtwp6ZgGwZSva4eWPC5mS6vUAmOABFgjdkM7Nw=
-github.com/attestantio/go-eth2-client v0.24.1 h1:DZ/2O83eUcSfPPs63xF6fdXDe4afA4nlt5j0y2cweOI=
-github.com/attestantio/go-eth2-client v0.24.1/go.mod h1:/KTLN3WuH1xrJL7ZZrpBoWM1xCCihnFbzequD5L+83o=
+github.com/attestantio/go-eth2-client v0.27.1 h1:g7bm+gG/p+gfzYdEuxuAepVWYb8EO+2KojV5/Lo2BxM=
+github.com/attestantio/go-eth2-client v0.27.1/go.mod h1:fvULSL9WtNskkOB4i+Yyr6BKpNHXvmpGZj9969fCrfY=
 github.com/attestantio/go-execution-client v0.10.2 h1:plfOAROLXVE//Yz8Ujp8s8PAr8rzXTnVKrsULt8+OuA=
 github.com/attestantio/go-execution-client v0.10.2/go.mod h1:ppLo3duaOxEpZYM/N6L7Kg/Ks931JKTY9YZnWBdtWSc=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -444,9 +444,8 @@ golang.org/x/tools v0.31.0 h1:0EedkvKDbh+qistFTd0Bcwe/YLh4vHwWEkiI0toFIBU=
 golang.org/x/tools v0.31.0/go.mod h1:naFTU+Cev749tSJRXJlna0T3WxKvb1kWEx15xA4SdmQ=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20240903120638-7835f813f4da h1:noIWHXmPHxILtqtCOPIhSt0ABwskkZKjD3bXGnZGpNY=
-golang.org/x/xerrors v0.0.0-20240903120638-7835f813f4da/go.mod h1:NDW/Ps6MPRej6fsCIbMTohpP40sJ/P/vI1MoTEGwX90=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=