diff --git a/lib/std/heap.zig b/lib/std/heap.zig
index 3996d91203..2bf5553bba 100644
--- a/lib/std/heap.zig
+++ b/lib/std/heap.zig
@@ -824,18 +824,22 @@ const page_size_min_default: ?usize = switch (builtin.os.tag) {
     .emscripten => 64 << 10,
     .linux => switch (builtin.cpu.arch) {
         // Linux/arch/*/Kconfig
+        .alpha => 8 << 10,
         .arc, .arceb => 4 << 10,
         .thumb, .thumbeb, .arm, .armeb => 4 << 10,
         .aarch64, .aarch64_be => 4 << 10,
         .csky => 4 << 10,
         .hexagon => 4 << 10,
+        .hppa => 4 << 10,
         .loongarch32, .loongarch64 => 4 << 10,
         .m68k => 4 << 10,
+        .microblaze, .microblazeel => 4 << 10,
         .mips, .mipsel, .mips64, .mips64el => 4 << 10,
         .or1k => 8 << 10,
         .powerpc, .powerpc64, .powerpc64le, .powerpcle => 4 << 10,
         .riscv32, .riscv64 => 4 << 10,
         .s390x => 4 << 10,
+        .sh, .sheb => 4 << 10,
         .sparc => 4 << 10,
         .sparc64 => 8 << 10,
         .x86, .x86_64 => 4 << 10,
@@ -972,18 +976,22 @@ const page_size_max_default: ?usize = switch (builtin.os.tag) {
     .emscripten => 64 << 10,
     .linux => switch (builtin.cpu.arch) {
         // Linux/arch/*/Kconfig
+        .alpha => 8 << 10,
         .arc, .arceb => 16 << 10,
         .thumb, .thumbeb, .arm, .armeb => 4 << 10,
         .aarch64, .aarch64_be => 64 << 10,
         .csky => 4 << 10,
         .hexagon => 256 << 10,
+        .hppa => 64 << 10,
         .loongarch32, .loongarch64 => 64 << 10,
         .m68k => 8 << 10,
+        .microblaze, .microblazeel => 4 << 10,
         .mips, .mipsel, .mips64, .mips64el => 64 << 10,
         .or1k => 8 << 10,
         .powerpc, .powerpc64, .powerpc64le, .powerpcle => 256 << 10,
         .riscv32, .riscv64 => 4 << 10,
         .s390x => 4 << 10,
+        .sh, .sheb => 64 << 10,
         .sparc => 4 << 10,
         .sparc64 => 8 << 10,
         .x86, .x86_64 => 4 << 10,