diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index 312661e0c..ab07b6682 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -1,6 +1,18 @@
 cmake_minimum_required (VERSION 3.22...4.0)
-install (DIRECTORY bash fish vim hooks
+
+find_package(PkgConfig)
+if(PkgConfig_FOUND)
+	pkg_get_variable(FISH_COMPLETIONSDIR fish completionsdir)
+endif()
+if(NOT FISH_COMPLETIONSDIR)
+	set(FISH_COMPLETIONSDIR share/fish/vendor_completions.d)
+	message(STATUS "fish pkgconfig module missing, assumed completions in ${FISH_COMPLETIONSDIR}")
+endif()
+
+install (DIRECTORY bash vim hooks
          DESTINATION ${TASK_DOCDIR}/scripts)
+install (FILES fish/task.fish
+         DESTINATION ${FISH_COMPLETIONSDIR})
 install (FILES zsh/_task
          DESTINATION share/zsh/site-functions)
 install (DIRECTORY add-ons