diff --git a/.github/actions/elixir-setup/action.yml b/.github/actions/elixir-setup/action.yml
index f0f56ba..cae1de5 100644
--- a/.github/actions/elixir-setup/action.yml
+++ b/.github/actions/elixir-setup/action.yml
@@ -57,14 +57,14 @@ runs:
   using: "composite"
   steps:
     - name: Setup elixir
-      uses: erlef/setup-beam@v1.15.4
+      uses: erlef/setup-beam@v1
       id: beam
       with:
         elixir-version: ${{ inputs.elixir-version }}
         otp-version: ${{ inputs.otp-version }}
 
     - name: Get deps cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: deps/
         key: deps-${{ inputs.cache-key }}-${{ runner.os }}-${{ hashFiles('**/mix.lock') }}
@@ -72,7 +72,7 @@ runs:
           deps-${{ inputs.cache-key }}-${{ runner.os }}-
 
     - name: Get build cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       id: build-cache
       with:
         path: _build/${{env.MIX_ENV}}/
@@ -81,7 +81,7 @@ runs:
           build-${{ inputs.cache-key }}-${{ runner.os }}-${{ inputs.otp-version }}-${{ inputs.elixir-version }}-${{ env.MIX_ENV }}-
 
     - name: Get Hex cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       id: hex-cache
       with:
         path: ~/.hex
@@ -90,7 +90,7 @@ runs:
           hex-${{ inputs.cache-key }}-${{ runner.os }}-${{ inputs.otp-version }}-${{ inputs.elixir-version }}-
 
     - name: Get Mix cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       id: mix-cache
       with:
         path: ${{ env.MIX_HOME || '~/.mix' }}
diff --git a/.github/workflows/elixir-build-and-test.yml b/.github/workflows/elixir-build-and-test.yml
index 2e33efe..2858a02 100644
--- a/.github/workflows/elixir-build-and-test.yml
+++ b/.github/workflows/elixir-build-and-test.yml
@@ -11,23 +11,23 @@ on:
 jobs:
   build:
     name: Elixir Unit Tests
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     env:
       MIX_ENV: test
     strategy:
       matrix:
         include:
-          - elixir-version: "1.13.4"
-            otp-version: "24.3"
-          - elixir-version: "1.13.4"
-            otp-version: "25.0.2"
-          - elixir-version: "1.14.3"
-            otp-version: "25.2"
-          - elixir-version: "1.15.5"
-            otp-version: "26"
+          - elixir-version: "1.15.7"
+            otp-version: "26.2"
+          - elixir-version: "1.16.3"
+            otp-version: "26.2"
+          - elixir-version: "1.17.3"
+            otp-version: "27.1"
+          - elixir-version: "1.18.4"
+            otp-version: "27.2"
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Elixir Project
         uses: ./.github/actions/elixir-setup
diff --git a/.github/workflows/elixir-quality-checks.yml b/.github/workflows/elixir-quality-checks.yml
index 4d65051..07ffcaf 100644
--- a/.github/workflows/elixir-quality-checks.yml
+++ b/.github/workflows/elixir-quality-checks.yml
@@ -17,12 +17,12 @@ jobs:
       # test stuff that isn't really relevant.
       # The other checks don't really care what environment they run in.
       MIX_ENV: dev
-      elixir: "1.15.4"
-      otp: "26.0.2"
+      elixir: "1.18.4"
+      otp: "27.2"
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Elixir Project
         uses: ./.github/actions/elixir-setup
diff --git a/.github/workflows/elixir-retired-packages-check.yml b/.github/workflows/elixir-retired-packages-check.yml
index e49a0c1..6493e04 100644
--- a/.github/workflows/elixir-retired-packages-check.yml
+++ b/.github/workflows/elixir-retired-packages-check.yml
@@ -14,12 +14,12 @@ jobs:
     runs-on: ubuntu-latest
     env:
       MIX_ENV: dev
-      elixir: "1.15.4"
-      otp: "26.0.2"
+      elixir: "1.18.4"
+      otp: "27.2"
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Elixir Project
         uses: ./.github/actions/elixir-setup
diff --git a/lib/channel_spec/socket.ex b/lib/channel_spec/socket.ex
index 208a65d..b8ad4fd 100644
--- a/lib/channel_spec/socket.ex
+++ b/lib/channel_spec/socket.ex
@@ -252,7 +252,7 @@ defmodule ChannelSpec.Socket do
   end
 
   defp get_operations(%ChannelHandler.Dsl.Event{} = event, _router, _prefix) do
-    Code.ensure_compiled(event.module)
+    Code.ensure_compiled!(event.module)
 
     if function_exported?(event.module, :__channel_operations__, 0) do
       operations = event.module.__channel_operations__()
@@ -279,7 +279,7 @@ defmodule ChannelSpec.Socket do
   end
 
   defp get_operations(%ChannelHandler.Dsl.Delegate{} = delegate, _router, _prefix) do
-    Code.ensure_compiled(delegate.module)
+    Code.ensure_compiled!(delegate.module)
 
     if function_exported?(delegate.module, :__channel_operations__, 0) do
       operations = delegate.module.__channel_operations__()