diff --git a/lib/std/heap.zig b/lib/std/heap.zig
index b5fd822959..382e763ef2 100644
--- a/lib/std/heap.zig
+++ b/lib/std/heap.zig
@@ -832,6 +832,7 @@ const page_size_min_default: ?usize = switch (builtin.os.tag) {
         .loongarch32, .loongarch64 => 4 << 10,
         .m68k => 4 << 10,
         .mips, .mipsel, .mips64, .mips64el => 4 << 10,
+        .or1k => 8 << 10,
         .powerpc, .powerpc64, .powerpc64le, .powerpcle => 4 << 10,
         .riscv32, .riscv64 => 4 << 10,
         .s390x => 4 << 10,
@@ -979,6 +980,7 @@ const page_size_max_default: ?usize = switch (builtin.os.tag) {
         .loongarch32, .loongarch64 => 64 << 10,
         .m68k => 8 << 10,
         .mips, .mipsel, .mips64, .mips64el => 64 << 10,
+        .or1k => 8 << 10,
         .powerpc, .powerpc64, .powerpc64le, .powerpcle => 256 << 10,
         .riscv32, .riscv64 => 4 << 10,
         .s390x => 4 << 10,