diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a5f121f215..071cfdd644 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -181,6 +181,7 @@ jobs:
           - i686-unknown-linux-gnu
           - i686-unknown-linux-musl
           - mipsel-unknown-linux-gnu
+          - riscv64gc-unknown-linux-gnu
           - x86_64-pc-windows-gnu
           - x86_64-pc-windows-msvc
           - x86_64-apple-darwin
@@ -249,6 +250,9 @@ jobs:
           - target: mipsel-unknown-linux-gnu
             host_os: ubuntu-22.04
 
+          - target: riscv64gc-unknown-linux-gnu
+            host_os: ubuntu-22.04
+
           - target: x86_64-pc-windows-gnu
             host_os: windows-latest
 
diff --git a/build.rs b/build.rs
index cdc5dd783c..69d5b903f6 100644
--- a/build.rs
+++ b/build.rs
@@ -30,6 +30,8 @@ const X86: &str = "x86";
 const X86_64: &str = "x86_64";
 const AARCH64: &str = "aarch64";
 const ARM: &str = "arm";
+const RISCV64: &str = "riscv64";
+const RISCV32: &str = "riscv32";
 
 #[rustfmt::skip]
 const RING_SRCS: &[(&[&str], &str)] = &[
@@ -45,7 +47,7 @@ const RING_SRCS: &[(&[&str], &str)] = &[
     (&[], "crypto/mem.c"),
     (&[], "crypto/poly1305/poly1305.c"),
 
-    (&[AARCH64, ARM, X86_64, X86], "crypto/crypto.c"),
+    (&[AARCH64, ARM, X86_64, X86, RISCV64, RISCV32], "crypto/crypto.c"),
 
     (&[X86_64, X86], "crypto/cpu_intel.c"),
 
diff --git a/include/ring-core/base.h b/include/ring-core/base.h
index f1a027d1a4..a73f927983 100644
--- a/include/ring-core/base.h
+++ b/include/ring-core/base.h
@@ -89,6 +89,14 @@
 #elif defined(__MIPSEL__) && defined(__LP64__)
 #define OPENSSL_64_BIT
 #define OPENSSL_MIPS64
+#elif defined(__riscv) && __riscv_xlen == 64
+#define OPENSSL_64_BIT
+#define OPENSSL_RISCV64
+#define OPENSSL_NO_ASM
+#elif defined(__riscv) && __riscv_xlen == 32
+#define OPENSSL_32_BIT
+#define OPENSSL_RISCV32
+#define OPENSSL_NO_ASM
 #elif defined(__wasm__)
 #define OPENSSL_32_BIT
 #else
diff --git a/mk/cargo.sh b/mk/cargo.sh
index 48ac92d711..d883af9632 100755
--- a/mk/cargo.sh
+++ b/mk/cargo.sh
@@ -21,6 +21,7 @@ rustflags_self_contained="-Clink-self-contained=yes -Clinker=rust-lld"
 qemu_aarch64="qemu-aarch64 -L /usr/aarch64-linux-gnu"
 qemu_arm="qemu-arm -L /usr/arm-linux-gnueabihf"
 qemu_mipsel="qemu-mipsel -L /usr/mipsel-linux-gnu"
+qemu_riscv64="qemu-riscv64 -L /usr/riscv64-linux-gnu"
 
 # Avoid putting the Android tools in `$PATH` because there are tools in this
 # directory like `clang` that would conflict with the same-named tools that may
@@ -98,6 +99,12 @@ case $target in
     export CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_GNU_LINKER=mipsel-linux-gnu-gcc
     export CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_GNU_RUNNER="$qemu_mipsel"
     ;;
+  riscv64gc-unknown-linux-gnu)
+    export CC_riscv64gc_unknown_linux_gnu=riscv64-linux-gnu-gcc
+    export AR_riscv64gc_unknown_linux_gnu=riscv64-linux-gnu-gcc-ar
+    export CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_GNU_LINKER=riscv64-linux-gnu-gcc
+    export CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_GNU_RUNNER="$qemu_riscv64"
+    ;;
   x86_64-unknown-linux-musl)
     export CC_x86_64_unknown_linux_musl=clang-$llvm_version
     export AR_x86_64_unknown_linux_musl=llvm-ar-$llvm_version
diff --git a/mk/install-build-tools.sh b/mk/install-build-tools.sh
index 2b578dd4fd..f68c3d5a8f 100755
--- a/mk/install-build-tools.sh
+++ b/mk/install-build-tools.sh
@@ -78,6 +78,12 @@ case $target in
     libc6-dev-mipsel-cross \
     qemu-user
   ;;
+--target=riscv64gc-unknown-linux-gnu)
+  install_packages \
+    gcc-riscv64-linux-gnu \
+    libc6-dev-riscv64-cross \
+    qemu-user
+  ;;
 --target=wasm32-unknown-unknown)
   cargo install wasm-bindgen-cli --bin wasm-bindgen-test-runner
   use_clang=1