diff --git a/build.sh b/build.sh
index b39e8cd..b3751db 100644
--- a/build.sh
+++ b/build.sh
@@ -56,6 +56,7 @@ wget -4 -O "${LIBS_DIR}/.pkg/nghttp2.tar.gz"  https://github.com/nghttp2/nghttp2
 wget -4 -O "${LIBS_DIR}/.pkg/nghttp3.tar.gz"  https://github.com/ngtcp2/nghttp3/releases/download/v1.1.0/nghttp3-1.1.0.tar.gz
 wget -4 -O "${LIBS_DIR}/.pkg/ngtcp2.tar.gz"   https://github.com/ngtcp2/ngtcp2/releases/download/v1.2.0/ngtcp2-1.2.0.tar.gz
 wget -4 -O "${LIBS_DIR}/.pkg/libidn2.tar.gz"  https://ftp.gnu.org/gnu/libidn/libidn2-2.3.7.tar.gz
+wget -4 -O "${LIBS_DIR}/.pkg/libpsl.tar.gz"   https://github.com/rockdaboot/libpsl/releases/download/0.21.5/libpsl-0.21.5.tar.gz
 wget -4 -O "${LIBS_DIR}/.pkg/libgsasl.tar.gz" https://ftp.gnu.org/gnu/gsasl/libgsasl-1.10.0.tar.gz
 wget -4 -O "${LIBS_DIR}/.pkg/curl.tar.gz"     https://curl.se/download/curl-${MY_VERSION}.tar.gz
 wget -4 -O "${LIBS_DIR}/.pkg/cacert.pem"      https://curl.se/ca/cacert.pem
@@ -213,6 +214,18 @@ CFLAGS="-march=${MY_MARCH} -mtune=${MY_MTUNE} -DNDEBUG -D_WIN32_WINNT=0x0501 -I$
 make && make install
 popd
 
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+# libpsl
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+printf "\n==================== libpsl ====================\n\n"
+readonly LPSL_DIR="${BASE_DIR}/libpsl-${MY_CPU}"
+rm -rf "${LPSL_DIR}" && mkdir "${LPSL_DIR}"
+tar -xvf "${LIBS_DIR}/.pkg/libpsl.tar.gz" --strip-components=1 -C "${LPSL_DIR}"
+pushd "${LPSL_DIR}"
+CFLAGS="-march=${MY_MARCH} -mtune=${MY_MTUNE} -DNDEBUG -D_WIN32_WINNT=0x0501 -I${LIBS_DIR}/include" LDFLAGS="-L${LIBS_DIR}/lib" ./configure --prefix="${LIBS_DIR}" --disable-shared
+make && make install
+popd
+
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 # libgsasl
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~