diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..fac2afc
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,11 @@
+module git.yetaga.in/alazyreader/appify
+
+go 1.24.2
+
+require (
+	github.com/JackMordaunt/icns v1.0.0
+	github.com/matryer/is v1.4.1
+	github.com/pkg/errors v0.9.1
+)
+
+require github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..0748578
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,8 @@
+github.com/JackMordaunt/icns v1.0.0 h1:41cNyWyQrG6beMw7m93LFK5o1GhefflsBTkauUkUtG8=
+github.com/JackMordaunt/icns v1.0.0/go.mod h1:ubRqphS0f2OD07BuNaQSuw9uHUVQNBX5g38n6i2bdqM=
+github.com/matryer/is v1.4.1 h1:55ehd8zaGABKLXQUe2awZ99BD/PTc2ls+KV/dXphgEQ=
+github.com/matryer/is v1.4.1/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=