diff --git a/pkg/oniguruma/build.zig b/pkg/oniguruma/build.zig
index 703b0a387..a7a5e1bcf 100644
--- a/pkg/oniguruma/build.zig
+++ b/pkg/oniguruma/build.zig
@@ -55,6 +55,9 @@ fn buildOniguruma(
         .PACKAGE = "oniguruma",
         .PACKAGE_VERSION = "6.9.9",
         .VERSION = "6.9.9",
+        .HAVE_ALLOCA = true,
+        .HAVE_ALLOCA_H = true,
+        .USE_CRNL_AS_LINE_TERMINATOR = false,
         .HAVE_STDINT_H = true,
         .HAVE_SYS_TIMES_H = true,
         .HAVE_SYS_TIME_H = true,