diff --git a/index.toml b/index.toml
index 849b785..a3e1d3a 100644
--- a/index.toml
+++ b/index.toml
@@ -534,6 +534,11 @@ file = "mods/starlight.pw.toml"
 hash = "218f67d6bcaae849582618cd3e5eb1d4cac0fd6045115f64340620300e160c11"
 metafile = true
 
+[[files]]
+file = "mods/tectonic.pw.toml"
+hash = "c9072b33298e95459c644344c8f8e7317a2f503a469e24bf51e63dca9c560db1"
+metafile = true
+
 [[files]]
 file = "mods/translucent-glass.pw.toml"
 hash = "c26c49f3c6321cf5fb9a9f310747ca0c6601c315903c0a0fd2cdbcc80b7ac531"
diff --git a/mods/tectonic.pw.toml b/mods/tectonic.pw.toml
new file mode 100644
index 0000000..eca20ca
--- /dev/null
+++ b/mods/tectonic.pw.toml
@@ -0,0 +1,13 @@
+name = "Tectonic"
+filename = "tectonic-mod-mc1.19.3+-v2.1.jar"
+side = "both"
+
+[download]
+url = "https://cdn.modrinth.com/data/lWDHr9jE/versions/8Efuao80/tectonic-mod-mc1.19.3%2B-v2.1.jar"
+hash-format = "sha1"
+hash = "5491f2d1d41e7e42dbeb8210af06e49ac656004a"
+
+[update]
+[update.modrinth]
+mod-id = "lWDHr9jE"
+version = "8Efuao80"
diff --git a/pack.toml b/pack.toml
index c1a63f0..d0abc7b 100644
--- a/pack.toml
+++ b/pack.toml
@@ -6,7 +6,7 @@ pack-format = "packwiz:1.1.0"
 [index]
 file = "index.toml"
 hash-format = "sha256"
-hash = "092c071840287c5eeb73236df40a69ae5944cd24cbbdf92b643a209f29b42b04"
+hash = "6cac47b75a707b7a2ce9cd6166fb2419b044b09d00c107da3a2b1674306246cf"
 
 [versions]
 fabric = "0.14.22"