diff --git a/sys-devel/llvm/llvm-12.0.0.9999.ebuild b/sys-devel/llvm/llvm-12.0.0.9999.ebuild
index 67438844e8edf..d15845fe310ff 100644
--- a/sys-devel/llvm/llvm-12.0.0.9999.ebuild
+++ b/sys-devel/llvm/llvm-12.0.0.9999.ebuild
@@ -14,7 +14,7 @@ LLVM_MANPAGES=build
 llvm.org_set_globals
 
 # Those are in lib/Targets, without explicit CMakeLists.txt mention
-ALL_LLVM_EXPERIMENTAL_TARGETS=( ARC VE )
+ALL_LLVM_EXPERIMENTAL_TARGETS=( ARC CSKY VE )
 # Keep in sync with CMakeLists.txt
 ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM AVR BPF Hexagon Lanai Mips MSP430
 	NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore