diff --git a/.gitmodules b/.gitmodules
index 860bcbb0..1d1b8429 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -278,3 +278,6 @@
 [submodule "assets/syntaxes/02_Extra/hosts"]
 	path = assets/syntaxes/02_Extra/hosts
 	url = https://github.com/tijn/hosts.tmLanguage
+[submodule "assets/syntaxes/02_Extra/Gomod"]
+	path = assets/syntaxes/02_Extra/Gomod
+	url = https://github.com/mitranim/sublime-gomod
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c77e8ae..56cdb429 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -58,6 +58,7 @@
 - Update hosts syntax #3368 (@keith-hall)
 - Map `.kshrc` files to Bash syntax #3364 (@ritoban23)
 - Map `/var/log/dmesg` files to Syslog syntax #3412 (@keith-hall)
+- Add syntax definition and test file for Go modules(`go.mod` and `go.sum`) highlighting, see #3424 (@DarkMatter-999)
 
 ## Themes
 
diff --git a/Cargo.lock b/Cargo.lock
index 4389a082..14ba58fc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -133,8 +133,7 @@ dependencies = [
  "grep-cli",
  "home",
  "indexmap",
- "itertools 0.13.0",
- "itertools 0.14.0",
+ "itertools",
  "minus",
  "nix",
  "nu-ansi-term",
@@ -900,15 +899,6 @@ version = "1.70.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
 
-[[package]]
-name = "itertools"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itertools"
 version = "0.14.0"
@@ -1867,9 +1857,9 @@ checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
 [[package]]
 name = "wait-timeout"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
+checksum = "09ac3b126d3914f9849036f826e054cbabdc8519970b8998ddaf3b5bd3c65f11"
 dependencies = [
  "libc",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 089822b8..85d97474 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -74,7 +74,7 @@ encoding_rs = "0.8.35"
 execute = { version = "0.2.13", optional = true }
 terminal-colorsaurus = "1.0"
 unicode-segmentation = "1.12.0"
-itertools = "0.13.0"
+itertools = "0.14.0"
 
 [dependencies.git2]
 version = "0.20"
@@ -100,7 +100,7 @@ assert_cmd = "2.0.12"
 expect-test = "1.5.0"
 serial_test = { version = "2.0.0", default-features = false }
 predicates = "3.1.3"
-wait-timeout = "0.2.0"
+wait-timeout = "0.2.1"
 tempfile = "3.16.0"
 serde = { version = "1.0", features = ["derive"] }
 
diff --git a/assets/syntaxes/02_Extra/Gomod b/assets/syntaxes/02_Extra/Gomod
new file mode 160000
index 00000000..e0200f02
--- /dev/null
+++ b/assets/syntaxes/02_Extra/Gomod
@@ -0,0 +1 @@
+Subproject commit e0200f024a394d6e7d6b7b37a070bb8ef324b19b
diff --git a/tests/syntax-tests/highlighted/Go/go.mod b/tests/syntax-tests/highlighted/Go/go.mod
new file mode 100644
index 00000000..26d11781
--- /dev/null
+++ b/tests/syntax-tests/highlighted/Go/go.mod
@@ -0,0 +1,5 @@
+module hugeparam
+
+go 1.25.1
+
+require golang.org/x/tools v0.37.0
diff --git a/tests/syntax-tests/highlighted/Go/go.sum b/tests/syntax-tests/highlighted/Go/go.sum
new file mode 100644
index 00000000..54394747
--- /dev/null
+++ b/tests/syntax-tests/highlighted/Go/go.sum
@@ -0,0 +1,6 @@
+golang.org/x/mod v0.28.0 h1:gQBtGhjxykdjY9YhZpSlZIsbnaE2+PgjfLWUQTnoZ1U=
+golang.org/x/mod v0.28.0/go.mod h1:yfB/L0NOf/kmEbXjzCPOx1iK1fRutOydrCMsqRhEBxI=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/tools v0.37.0 h1:DVSRzp7FwePZW356yEAChSdNcQo6Nsp+fex1SUW09lE=
+golang.org/x/tools v0.37.0/go.mod h1:MBN5QPQtLMHVdvsbtarmTNukZDdgwdwlO5qGacAzF0w=
diff --git a/tests/syntax-tests/source/Go/go.mod b/tests/syntax-tests/source/Go/go.mod
new file mode 100644
index 00000000..9f229ef3
--- /dev/null
+++ b/tests/syntax-tests/source/Go/go.mod
@@ -0,0 +1,5 @@
+module hugeparam
+
+go 1.25.1
+
+require golang.org/x/tools v0.37.0
diff --git a/tests/syntax-tests/source/Go/go.sum b/tests/syntax-tests/source/Go/go.sum
new file mode 100644
index 00000000..f04bc1a7
--- /dev/null
+++ b/tests/syntax-tests/source/Go/go.sum
@@ -0,0 +1,6 @@
+golang.org/x/mod v0.28.0 h1:gQBtGhjxykdjY9YhZpSlZIsbnaE2+PgjfLWUQTnoZ1U=
+golang.org/x/mod v0.28.0/go.mod h1:yfB/L0NOf/kmEbXjzCPOx1iK1fRutOydrCMsqRhEBxI=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/tools v0.37.0 h1:DVSRzp7FwePZW356yEAChSdNcQo6Nsp+fex1SUW09lE=
+golang.org/x/tools v0.37.0/go.mod h1:MBN5QPQtLMHVdvsbtarmTNukZDdgwdwlO5qGacAzF0w=