diff --git a/.github/workflows/outboards/tightyl.outboard b/.github/workflows/outboards/tightyl.outboard
new file mode 100644
index 0000000..6345f24
--- /dev/null
+++ b/.github/workflows/outboards/tightyl.outboard
@@ -0,0 +1,7 @@
+# Copyright 2021 Manna Harbour
+# https://github.com/manna-harbour/miryoku
+
+outboard_repository=MvEerd/zmk-config
+outboard_ref=master
+outboard_from=config/boards/shields/tightyl
+outboard_to=boards/shields/tightyl
diff --git a/.github/workflows/src/test-shields.yml.m4 b/.github/workflows/src/test-shields.yml.m4
index 83e52a3..f5cdb6e 100644
--- a/.github/workflows/src/test-shields.yml.m4
+++ b/.github/workflows/src/test-shields.yml.m4
@@ -54,6 +54,8 @@ m4_include(include/jobs-build.yml.m4)m4_dnl
           - sweepv2_right # outboard
           - tbkmini_left # outboard
           - tbkmini_right # outboard
+          - tightyl_left # outboard
+          - tightyl_right # outboard
           - viterbi_left # outboard
           - viterbi_right # outboard
         board:
diff --git a/.github/workflows/test-shields.yml b/.github/workflows/test-shields.yml
index 9d2c08c..83f6344 100644
--- a/.github/workflows/test-shields.yml
+++ b/.github/workflows/test-shields.yml
@@ -64,6 +64,8 @@ jobs:
           - sweepv2_right # outboard
           - tbkmini_left # outboard
           - tbkmini_right # outboard
+          - tightyl_left # outboard
+          - tightyl_right # outboard
           - viterbi_left # outboard
           - viterbi_right # outboard
         board:
diff --git a/config/tightyl.keymap b/config/tightyl.keymap
new file mode 100644
index 0000000..b1774f6
--- /dev/null
+++ b/config/tightyl.keymap
@@ -0,0 +1,5 @@
+// Copyright 2021 Manna Harbour
+// https://github.com/manna-harbour/miryoku
+
+#include "../miryoku/mapping/46-tightyl.h"
+#include "../miryoku/miryoku.dtsi"
diff --git a/miryoku/mapping/46-tightyl.h b/miryoku/mapping/46-tightyl.h
new file mode 100644
index 0000000..b14e2bf
--- /dev/null
+++ b/miryoku/mapping/46-tightyl.h
@@ -0,0 +1,15 @@
+// Copyright 2021 Manna Harbour
+// https://github.com/manna-harbour/miryoku
+
+#define XXX &none
+
+#define MIRYOKU_MAPPING( \
+     K00, K01, K02, K03, K04,                K05, K06, K07, K08, K09, \
+     K10, K11, K12, K13, K14,                K15, K16, K17, K18, K19, \
+     K20, K21, K22, K23, K24,                K25, K26, K27, K28, K29, \
+     N30, N31, K32, K33, K34,                K35, K36, K37, N38, N39 \
+) \
+XXX  K00  K01  K02  K03  K04                 K05  K06  K07  K08  K09  XXX \
+XXX  K10  K11  K12  K13  K14                 K15  K16  K17  K18  K19  XXX \
+XXX  K20  K21  K22  K23  K24                 K25  K26  K27  K28  K29  XXX \
+          XXX  XXX  K32  K33  K34       K35  K36  K37  XXX  XXX