diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 55c3dbf..3e7ae59 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Validate naming and README presence
       run: |
         for dir in python javascript java dotnet go; do
@@ -30,8 +30,8 @@ jobs:
               echo "::error::$name does not follow NNN-kebab-case naming"
               exit 1
             fi
-            if [ ! -f "${sample}README.md" ]; then
-              echo "::error::$name is missing README.md"
+            if ! find "${sample}" -maxdepth 1 \( -type f -o -type l \) -iname "readme.md" -print -quit | grep -q .; then
+              echo "::error::$name is missing a readme.md (case-insensitive)"
               exit 1
             fi
           done
@@ -44,9 +44,9 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: '3.12'
     - name: Install dependencies
@@ -69,9 +69,9 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Set up Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: '20'
     - name: Install and test
@@ -90,9 +90,9 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Set up Java
-      uses: actions/setup-java@v4
+      uses: actions/setup-java@v5
       with:
         distribution: microsoft
         java-version: '21'
@@ -114,11 +114,12 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Set up .NET
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
-        dotnet-version: '9.0'
+        dotnet-version: |
+          10.0
     - name: Build
       run: |
         [ -d dotnet ] || exit 0
@@ -134,9 +135,9 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: '1.22'
     - name: Build and test