diff --git a/README.md b/README.md
index 95eeb04c8..4baa69cd5 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 * Convert to RGB formats for rendering/effects.
 * Rotate by 90/180/270 degrees to adjust for mobile devices in portrait mode.
 * Optimized for SSSE3/AVX2 on x86/x64.
-* Optimized for Neon on Arm.
+* Optimized for Neon/SVE2/SME on Arm.
 * Optimized for MSA on Mips.
 * Optimized for RVV on RISC-V.
 
diff --git a/docs/environment_variables.md b/docs/environment_variables.md
index 248cc082b..329f81cf9 100644
--- a/docs/environment_variables.md
+++ b/docs/environment_variables.md
@@ -7,9 +7,11 @@ For test purposes, environment variables can be set to control libyuv behavior.
 By default the cpu is detected and the most advanced form of SIMD is used.  But you can disable instruction sets selectively, or completely, falling back on C code.  Set the variable to 1 to disable the specified instruction set.
 
 ## All CPUs
+
     LIBYUV_DISABLE_ASM
 
 ## Intel CPUs
+
     LIBYUV_DISABLE_X86
     LIBYUV_DISABLE_SSE2
     LIBYUV_DISABLE_SSSE3
@@ -31,18 +33,26 @@ By default the cpu is detected and the most advanced form of SIMD is used.  But
     LIBYUV_DISABLE_AVXVNNIINT8
     LIBYUV_DISABLE_AMXINT8
 
-## ARM CPUs
+## Arm CPUs
 
     LIBYUV_DISABLE_NEON
+    LIBYUV_DISABLE_NEON_DOTPROD
+    LIBYUV_DISABLE_NEON_I8MM
+    LIBYUV_DISABLE_SVE
+    LIBYUV_DISABLE_SVE2
+    LIBYUV_DISABLE_SME
 
 ## MIPS CPUs
+
     LIBYUV_DISABLE_MSA
 
 ## LOONGARCH CPUs
+
     LIBYUV_DISABLE_LSX
     LIBYUV_DISABLE_LASX
 
 ## RISCV CPUs
+
     LIBYUV_DISABLE_RVV
 
 # Test Width/Height/Repeat