diff --git a/crates/uv-platform-tags/src/platform.rs b/crates/uv-platform-tags/src/platform.rs
index e3418a17d..697891b19 100644
--- a/crates/uv-platform-tags/src/platform.rs
+++ b/crates/uv-platform-tags/src/platform.rs
@@ -90,6 +90,7 @@ pub enum Arch {
     #[serde(alias = "amd64")]
     X86_64,
     S390X,
+    LoongArch64,
     Riscv64,
 }
 
@@ -105,6 +106,7 @@ impl fmt::Display for Arch {
             Self::X86 => write!(f, "i686"),
             Self::X86_64 => write!(f, "x86_64"),
             Self::S390X => write!(f, "s390x"),
+            Self::LoongArch64 => write!(f, "loongarch64"),
             Self::Riscv64 => write!(f, "riscv64"),
         }
     }
@@ -124,7 +126,7 @@ impl Arch {
             // manylinux_2_31
             Self::Riscv64 => Some(31),
             // unsupported
-            Self::Armv5TEL | Self::Armv6L => None,
+            Self::Armv5TEL | Self::Armv6L | Self::LoongArch64 => None,
         }
     }
 }
diff --git a/crates/uv-python/src/platform.rs b/crates/uv-python/src/platform.rs
index 67342ae1a..d34634754 100644
--- a/crates/uv-python/src/platform.rs
+++ b/crates/uv-python/src/platform.rs
@@ -274,6 +274,10 @@ impl From<&uv_platform_tags::Arch> for Arch {
                 family: target_lexicon::Architecture::X86_64,
                 variant: None,
             },
+            uv_platform_tags::Arch::LoongArch64 => Self {
+                family: target_lexicon::Architecture::LoongArch64,
+                variant: None,
+            },
             uv_platform_tags::Arch::Riscv64 => Self {
                 family: target_lexicon::Architecture::Riscv64(
                     target_lexicon::Riscv64Architecture::Riscv64,