diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 99a8aa3ca..ea742773f 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -124,11 +124,11 @@ jobs:
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Run CMake (Release)
-        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ARM64 -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/W4 /WX"
+        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ARM64 -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/W4 /WX"
         if: matrix.build_type == 'Release'
         shell: pwsh
       - name: Run CMake (Debug)
-        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ARM64 -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="/W4 /WX"
+        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ARM64 -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="/W4 /WX"
         if: matrix.build_type == 'Debug'
         shell: pwsh
       - name: Build
diff --git a/tests/src/unit-merge_patch.cpp b/tests/src/unit-merge_patch.cpp
index 8ac281ef5..c9741e85b 100644
--- a/tests/src/unit-merge_patch.cpp
+++ b/tests/src/unit-merge_patch.cpp
@@ -62,7 +62,7 @@ std::string nested_objects(const std::size_t depth, const int variant)
         }
         text += "\"a\":";
     }
-    text += variant == 1 ? "{\"x\":1,\"y\":null}" : "{\"y\":2}";
+    text += variant == 1 ? R"({"x":1,"y":null})" : "{\"y\":2}";
     text.append(depth, '}');
     return text;
 }
diff --git a/tests/src/unit-modifiers.cpp b/tests/src/unit-modifiers.cpp
index 55f9d467e..c878ec15c 100644
--- a/tests/src/unit-modifiers.cpp
+++ b/tests/src/unit-modifiers.cpp
@@ -48,7 +48,7 @@ std::string nested_objects(const std::size_t depth, const int variant)
         if (variant == 2 && i % 5 == 0)
         {
             // an object replacing a primitive, which is not merged
-            text += "\"s0\":{\"o\":1},";
+            text += R"("s0":{"o":1},)";
         }
         text += "\"a\":";
     }