diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AspNetCoreServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AspNetCoreServerCodegen.java
index f72187c77cb1..35b277126d36 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AspNetCoreServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AspNetCoreServerCodegen.java
@@ -401,6 +401,7 @@ public void processOpts() {
         if (!isLibrary) {
             supportingFiles.add(new SupportingFile("Dockerfile.mustache", packageFolder, "Dockerfile"));
             supportingFiles.add(new SupportingFile("appsettings.json", packageFolder, "appsettings.json"));
+            supportingFiles.add(new SupportingFile("appsettings.Development.json", packageFolder, "appsettings.Development.json"));
 
             supportingFiles.add(new SupportingFile("Startup.mustache", packageFolder, "Startup.cs"));
             supportingFiles.add(new SupportingFile("Program.mustache", packageFolder, "Program.cs"));
diff --git a/samples/server/petstore/aspnetcore-3.0/.openapi-generator/FILES b/samples/server/petstore/aspnetcore-3.0/.openapi-generator/FILES
index 25c2ed786eec..4dcf9d82895b 100644
--- a/samples/server/petstore/aspnetcore-3.0/.openapi-generator/FILES
+++ b/samples/server/petstore/aspnetcore-3.0/.openapi-generator/FILES
@@ -23,6 +23,7 @@ src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs
 src/Org.OpenAPITools/Properties/launchSettings.json
 src/Org.OpenAPITools/Startup.cs
+src/Org.OpenAPITools/appsettings.Development.json
 src/Org.OpenAPITools/appsettings.json
 src/Org.OpenAPITools/wwwroot/README.md
 src/Org.OpenAPITools/wwwroot/index.html
diff --git a/samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/appsettings.Development.json b/samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/appsettings.Development.json
new file mode 100644
index 000000000000..e203e9407e74
--- /dev/null
+++ b/samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/appsettings.Development.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}
diff --git a/samples/server/petstore/aspnetcore-3.1/.openapi-generator/FILES b/samples/server/petstore/aspnetcore-3.1/.openapi-generator/FILES
index 25c2ed786eec..4dcf9d82895b 100644
--- a/samples/server/petstore/aspnetcore-3.1/.openapi-generator/FILES
+++ b/samples/server/petstore/aspnetcore-3.1/.openapi-generator/FILES
@@ -23,6 +23,7 @@ src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs
 src/Org.OpenAPITools/Properties/launchSettings.json
 src/Org.OpenAPITools/Startup.cs
+src/Org.OpenAPITools/appsettings.Development.json
 src/Org.OpenAPITools/appsettings.json
 src/Org.OpenAPITools/wwwroot/README.md
 src/Org.OpenAPITools/wwwroot/index.html
diff --git a/samples/server/petstore/aspnetcore-3.1/src/Org.OpenAPITools/appsettings.Development.json b/samples/server/petstore/aspnetcore-3.1/src/Org.OpenAPITools/appsettings.Development.json
new file mode 100644
index 000000000000..e203e9407e74
--- /dev/null
+++ b/samples/server/petstore/aspnetcore-3.1/src/Org.OpenAPITools/appsettings.Development.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}
diff --git a/samples/server/petstore/aspnetcore-5.0/.openapi-generator/FILES b/samples/server/petstore/aspnetcore-5.0/.openapi-generator/FILES
index 25c2ed786eec..4dcf9d82895b 100644
--- a/samples/server/petstore/aspnetcore-5.0/.openapi-generator/FILES
+++ b/samples/server/petstore/aspnetcore-5.0/.openapi-generator/FILES
@@ -23,6 +23,7 @@ src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs
 src/Org.OpenAPITools/Properties/launchSettings.json
 src/Org.OpenAPITools/Startup.cs
+src/Org.OpenAPITools/appsettings.Development.json
 src/Org.OpenAPITools/appsettings.json
 src/Org.OpenAPITools/wwwroot/README.md
 src/Org.OpenAPITools/wwwroot/index.html
diff --git a/samples/server/petstore/aspnetcore-5.0/src/Org.OpenAPITools/appsettings.Development.json b/samples/server/petstore/aspnetcore-5.0/src/Org.OpenAPITools/appsettings.Development.json
new file mode 100644
index 000000000000..e203e9407e74
--- /dev/null
+++ b/samples/server/petstore/aspnetcore-5.0/src/Org.OpenAPITools/appsettings.Development.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}
diff --git a/samples/server/petstore/aspnetcore-6.0/.openapi-generator/FILES b/samples/server/petstore/aspnetcore-6.0/.openapi-generator/FILES
index 4d275ef7bc3a..4563db30a522 100644
--- a/samples/server/petstore/aspnetcore-6.0/.openapi-generator/FILES
+++ b/samples/server/petstore/aspnetcore-6.0/.openapi-generator/FILES
@@ -24,6 +24,7 @@ src/Org.OpenAPITools/Org.OpenAPITools.csproj
 src/Org.OpenAPITools/Program.cs
 src/Org.OpenAPITools/Properties/launchSettings.json
 src/Org.OpenAPITools/Startup.cs
+src/Org.OpenAPITools/appsettings.Development.json
 src/Org.OpenAPITools/appsettings.json
 src/Org.OpenAPITools/wwwroot/README.md
 src/Org.OpenAPITools/wwwroot/index.html
diff --git a/samples/server/petstore/aspnetcore-6.0/src/Org.OpenAPITools/appsettings.Development.json b/samples/server/petstore/aspnetcore-6.0/src/Org.OpenAPITools/appsettings.Development.json
new file mode 100644
index 000000000000..e203e9407e74
--- /dev/null
+++ b/samples/server/petstore/aspnetcore-6.0/src/Org.OpenAPITools/appsettings.Development.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}
diff --git a/samples/server/petstore/aspnetcore/.openapi-generator/FILES b/samples/server/petstore/aspnetcore/.openapi-generator/FILES
index 007264be5292..b43aaa08fc28 100644
--- a/samples/server/petstore/aspnetcore/.openapi-generator/FILES
+++ b/samples/server/petstore/aspnetcore/.openapi-generator/FILES
@@ -23,6 +23,7 @@ src/Org.OpenAPITools/Org.OpenAPITools.csproj
 src/Org.OpenAPITools/Program.cs
 src/Org.OpenAPITools/Properties/launchSettings.json
 src/Org.OpenAPITools/Startup.cs
+src/Org.OpenAPITools/appsettings.Development.json
 src/Org.OpenAPITools/appsettings.json
 src/Org.OpenAPITools/wwwroot/README.md
 src/Org.OpenAPITools/wwwroot/index.html
diff --git a/samples/server/petstore/aspnetcore/src/Org.OpenAPITools/appsettings.Development.json b/samples/server/petstore/aspnetcore/src/Org.OpenAPITools/appsettings.Development.json
new file mode 100644
index 000000000000..e203e9407e74
--- /dev/null
+++ b/samples/server/petstore/aspnetcore/src/Org.OpenAPITools/appsettings.Development.json
@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}