diff --git a/build/windows/gitlab-ci/installer-gimp-msys2.sh b/build/windows/gitlab-ci/installer-gimp-msys2.sh
index 0e34ad6ff3..1f0aeb35aa 100644
--- a/build/windows/gitlab-ci/installer-gimp-msys2.sh
+++ b/build/windows/gitlab-ci/installer-gimp-msys2.sh
@@ -40,6 +40,7 @@ download_lang ChineseTraditional.isl
 add_bom ChineseTraditional.isl
 download_lang EnglishBritish.isl
 download_lang Esperanto.isl
+download_lang Galician.isl
 download_lang Greek.isl
 download_lang Hungarian.isl
 download_lang Indonesian.isl
diff --git a/build/windows/installer/gimp3264.iss b/build/windows/installer/gimp3264.iss
index 74d077999a..10d85fcf69 100755
--- a/build/windows/installer/gimp3264.iss
+++ b/build/windows/installer/gimp3264.iss
@@ -190,6 +190,7 @@ Name: "es"; MessagesFile: "compiler:Languages\Spanish.isl,lang\es.setup.isl"
 Name: "eu"; MessagesFile: "compiler:Languages\Unofficial\Basque.isl,lang\eu.setup.isl"
 Name: "fi"; MessagesFile: "compiler:Languages\Finnish.isl,lang\fi.setup.isl"
 Name: "fr"; MessagesFile: "compiler:Languages\French.isl,lang\fr.setup.isl"
+Name: "gl"; MessagesFile: "compiler:Languages\Unofficial\Galician.isl,lang\gl.setup.isl"
 Name: "he"; MessagesFile: "compiler:Languages\Hebrew.isl,lang\he.setup.isl"
 Name: "hu"; MessagesFile: "compiler:Languages\Unofficial\Hungarian.isl,lang\hu.setup.isl"
 ;Name: "hr"; MessagesFile: "compiler:Languages\Unofficial\Croatian.isl,lang\hr.setup.isl"
diff --git a/build/windows/installer/lang/Makefile.am b/build/windows/installer/lang/Makefile.am
index e8e4d56a63..40aee2547e 100644
--- a/build/windows/installer/lang/Makefile.am
+++ b/build/windows/installer/lang/Makefile.am
@@ -20,6 +20,7 @@ languages = \
 	eu:[eu]		\
 	fi:[fi]		\
 	fr:[fr]		\
+	gl:[gl]		\
 	he:[he]		\
 	hu:[hu]		\
 	id:[id]		\
diff --git a/build/windows/installer/lang/meson.build b/build/windows/installer/lang/meson.build
index 977e29b050..7940e3cf6a 100644
--- a/build/windows/installer/lang/meson.build
+++ b/build/windows/installer/lang/meson.build
@@ -26,6 +26,7 @@ languages = [
   { 'code': 'eu',    },
   { 'code': 'fi',    },
   { 'code': 'fr',    },
+  { 'code': 'gl',    },
   { 'code': 'he',    },
   { 'code': 'hu',    },
   { 'code': 'id',    },