diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 2775a104e..ab9298116 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -1914,9 +1914,9 @@ func TestCcLibraryCppStdWithGnuExtensions_ConvertsToFeatureAttr(t *testing.T) {
 		{cpp_std: "gnu++17", gnu_extensions: "true", bazel_cpp_std: "gnu++17"},
 
 		// some c_std test cases
-		{c_std: "experimental", gnu_extensions: "", bazel_c_std: "gnu11"},
-		{c_std: "experimental", gnu_extensions: "false", bazel_cpp_std: "c++17", bazel_c_std: "c11"},
-		{c_std: "experimental", gnu_extensions: "true", bazel_c_std: "gnu11"},
+		{c_std: "experimental", gnu_extensions: "", bazel_c_std: "gnu17"},
+		{c_std: "experimental", gnu_extensions: "false", bazel_cpp_std: "c++17", bazel_c_std: "c17"},
+		{c_std: "experimental", gnu_extensions: "true", bazel_c_std: "gnu17"},
 		{c_std: "gnu11", cpp_std: "gnu++17", gnu_extensions: "", bazel_cpp_std: "gnu++17", bazel_c_std: "gnu11"},
 		{c_std: "gnu11", cpp_std: "gnu++17", gnu_extensions: "false", bazel_cpp_std: "c++17", bazel_c_std: "c11"},
 		{c_std: "gnu11", cpp_std: "gnu++17", gnu_extensions: "true", bazel_cpp_std: "gnu++17", bazel_c_std: "gnu11"},
diff --git a/cc/config/global.go b/cc/config/global.go
index 2f00cfa8f..1c4ad7f6a 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -281,7 +281,7 @@ var (
 
 	CStdVersion               = "gnu11"
 	CppStdVersion             = "gnu++17"
-	ExperimentalCStdVersion   = "gnu11"
+	ExperimentalCStdVersion   = "gnu17"
 	ExperimentalCppStdVersion = "gnu++2a"
 
 	// prebuilts/clang default settings.