diff --git a/sdk_container/src/third_party/portage-stable/eclass/rust.eclass b/sdk_container/src/third_party/portage-stable/eclass/rust.eclass
index a9ccfed4cf..2cc0dd7d23 100644
--- a/sdk_container/src/third_party/portage-stable/eclass/rust.eclass
+++ b/sdk_container/src/third_party/portage-stable/eclass/rust.eclass
@@ -68,6 +68,7 @@ fi
 # Definitive list of Rust slots and the associated LLVM slot, newest first.
 declare -A -g -r _RUST_LLVM_MAP=(
 	["9999"]=20
+	["1.87.0"]=20
 	["1.86.0"]=19
 	["1.85.1"]=19
 	["1.85.0"]=19
@@ -94,6 +95,7 @@ declare -A -g -r _RUST_LLVM_MAP=(
 # this array is used to store the Rust slots in a more convenient order for iteration.
 declare -a -g -r _RUST_SLOTS_ORDERED=(
 	"9999"
+	"1.87.0"
 	"1.86.0"
 	"1.85.1"
 	"1.85.0"