diff --git a/.github/workflows/clang-format-check.yml b/.github/workflows/clang-format-check.yml
index f078a24..bde5b80 100755
--- a/.github/workflows/clang-format-check.yml
+++ b/.github/workflows/clang-format-check.yml
@@ -3,7 +3,7 @@ on: [push, pull_request]
 jobs:
   formatting-check:
     name: Formatting Check
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - name: Run clang-format style check for C/C++/Protobuf programs.
diff --git a/.github/workflows/cmake_build.yaml b/.github/workflows/cmake_build.yaml
index 518b16f..a5cb813 100644
--- a/.github/workflows/cmake_build.yaml
+++ b/.github/workflows/cmake_build.yaml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest] # [ubuntu-latest, macos-latest]
+        os: [ubuntu-24.04] # [ubuntu-latest, macos-latest]
         compiler: [g++, clang++]
     runs-on: ${{ matrix.os }}
     permissions:
@@ -30,11 +30,16 @@ jobs:
           cxx-compiler: ${{ matrix.compiler }}
       - name: Build tests
         run: cd build && pwd && make -j
+      - name: Install Python 3.10
+        run: |
+          sudo add-apt-repository -y ppa:deadsnakes/ppa
+          sudo apt update -y
+          sudo apt install -y python3.10 python3.10-venv python3.10-dev
+          sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.10 1
       - name: Install test dependencies
         run: |
-          sudo apt-get install -y python3.10-full \
-          &&  pip install --upgrade pip \
-          && pip install wheel yapf cpplint zarr xarray
+          python3.10 -m pip install --upgrade pip setuptools wheel --no-input
+          python3.10 -m pip install yapf cpplint zarr xarray --no-input
       - name: Run tests
         run: |
           cd build/mdio/ \
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 3a99126..762aa92 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest] # [ubuntu-latest, macos-latest]
+        os: [ubuntu-24.04] # [ubuntu-latest, macos-latest]
         compiler: [g++]
     runs-on: ${{ matrix.os }}
     permissions:
diff --git a/mdio/acceptance_test.cc b/mdio/acceptance_test.cc
index 6555858..188a65b 100644
--- a/mdio/acceptance_test.cc
+++ b/mdio/acceptance_test.cc
@@ -461,8 +461,6 @@ TEST(Variable, optionalAttrs) {
   ASSERT_TRUE(f8.status().ok()) << f8.status();
   ASSERT_TRUE(voided.status().ok()) << voided.status();
 
-  std::cout << i2.value().GetAttributes().dump(4) << std::endl;
-
   EXPECT_EQ(i2.value().GetAttributes()["attributes"]["foo"], "bar")
       << i2.value().GetAttributes();
   EXPECT_EQ(i4.value().GetAttributes()["attributes"]["foo"], "bar")
diff --git a/mdio/variable.h b/mdio/variable.h
index def24c0..34d16b2 100644
--- a/mdio/variable.h
+++ b/mdio/variable.h
@@ -641,31 +641,24 @@ Future<Variable<T, R, M>> OpenVariable(const nlohmann::json& json_store,
       // specifies a different chunkGrid, it will not be used and should
       // actually fail here.
       nlohmann::json correctedSuppliedAttrs = suppliedAttributes;
-      if (correctedSuppliedAttrs["attributes"].contains("metadata")) {
-        if (correctedSuppliedAttrs["attributes"]["metadata"].contains(
-                "chunkGrid")) {
-          correctedSuppliedAttrs["attributes"]["metadata"].erase("chunkGrid");
+      if (correctedSuppliedAttrs.contains("attributes")) {
+        if (correctedSuppliedAttrs["attributes"].contains("metadata")) {
+          if (correctedSuppliedAttrs["attributes"]["metadata"].contains(
+                  "chunkGrid")) {
+            correctedSuppliedAttrs["attributes"]["metadata"].erase("chunkGrid");
+          }
         }
-        for (auto& item :
-             correctedSuppliedAttrs["attributes"]["metadata"].items()) {
-          correctedSuppliedAttrs["attributes"][item.key()] =
-              std::move(item.value());
+        auto savedAttrs = correctedSuppliedAttrs["attributes"];
+        correctedSuppliedAttrs.erase("attributes");
+        for (auto& item : savedAttrs.items()) {
+          correctedSuppliedAttrs[item.key()] = std::move(item.value());
         }
-        correctedSuppliedAttrs["attributes"].erase("metadata");
       }
       // BFS to make sure supplied attributes match stored attributes
       nlohmann::json searchableMetadata = new_metadata;
-      if (searchableMetadata["attributes"].contains("variable_name")) {
+      if (searchableMetadata.contains("variable_name")) {
         // Since we don't actually want to have to specify the variable name
-        searchableMetadata["attributes"].erase("variable_name");
-      }
-      if (searchableMetadata["attributes"].contains("metadata")) {
-        for (auto& item :
-             searchableMetadata["attributes"]["metadata"].items()) {
-          searchableMetadata["attributes"][item.key()] =
-              std::move(item.value());
-        }
-        searchableMetadata["attributes"].erase("metadata");
+        searchableMetadata.erase("variable_name");
       }
       std::queue<std::pair<nlohmann::json, nlohmann::json>> queue;
       queue.push({searchableMetadata, correctedSuppliedAttrs});