diff --git a/contrib/geoJSON_export.lua b/contrib/geoJSON_export.lua
index 74629d6..3da6c0c 100644
--- a/contrib/geoJSON_export.lua
+++ b/contrib/geoJSON_export.lua
@@ -33,6 +33,8 @@ USAGE
 ]]
    
 local dt = require "darktable"
+require "official/yield"
+
 local gettext = dt.gettext
 dt.configuration.check_version(...,{3,0,0})
 	
diff --git a/contrib/geo_uri.lua b/contrib/geo_uri.lua
index e7edefd..6174a12 100644
--- a/contrib/geo_uri.lua
+++ b/contrib/geo_uri.lua
@@ -27,6 +27,8 @@ USAGE
 ]]
 
 local dt = require "darktable"
+require "official/yield"
+
 local gettext = dt.gettext
 dt.configuration.check_version(...,{3,0,0})
 
diff --git a/contrib/gimp.lua b/contrib/gimp.lua
index 61c4fdb..098e099 100644
--- a/contrib/gimp.lua
+++ b/contrib/gimp.lua
@@ -64,6 +64,8 @@
 ]]
 
 local dt = require "darktable"
+require "official/yield"
+
 local gettext = dt.gettext
 
 dt.configuration.check_version(...,{3,0,0})
diff --git a/contrib/hugin.lua b/contrib/hugin.lua
index 8d80629..cecf481 100644
--- a/contrib/hugin.lua
+++ b/contrib/hugin.lua
@@ -34,6 +34,8 @@ This plugin will add a new storage option and calls hugin after export.
 ]]
 
 local dt = require "darktable"
+require "official/yield"
+
 local gettext = dt.gettext
 
 -- works with darktable API version 2.0.0 and 3.0.0
diff --git a/contrib/kml_export.lua b/contrib/kml_export.lua
index 799822c..e6c7861 100644
--- a/contrib/kml_export.lua
+++ b/contrib/kml_export.lua
@@ -37,6 +37,8 @@ USAGE
 ]]
    
 local dt = require "darktable"
+require "official/yield"
+
 local gettext = dt.gettext
 dt.configuration.check_version(...,{3,0,0})
 	
diff --git a/contrib/slideshowMusic.lua b/contrib/slideshowMusic.lua
index fdece6a..7a69c20 100644
--- a/contrib/slideshowMusic.lua
+++ b/contrib/slideshowMusic.lua
@@ -25,6 +25,8 @@ USAGE
 ]]
    
 local dt = require "darktable"
+require "official/yield"
+
 local gettext = dt.gettext
 dt.configuration.check_version(...,{2,0,2},{3,0,0})
 
diff --git a/contrib/video_mencoder.lua b/contrib/video_mencoder.lua
index e65adaa..5cf6d17 100644
--- a/contrib/video_mencoder.lua
+++ b/contrib/video_mencoder.lua
@@ -31,6 +31,8 @@ USAGE
 ]]
 
 local dt = require "darktable"
+require "official/yield"
+
 dt.configuration.check_version(...,{2,0,1})
 
 local function show_status(storage, image, format, filename, number, total, high_quality, extra_data)
diff --git a/official/enfuse.lua b/official/enfuse.lua
index 829a969..1fc9f3a 100644
--- a/official/enfuse.lua
+++ b/official/enfuse.lua
@@ -33,6 +33,8 @@ TODO
 ]]
 
 local dt = require "darktable"
+require "official/yield"
+
 
 dt.configuration.check_version(...,{3,0,0})
 
diff --git a/official/generate_image_txt.lua b/official/generate_image_txt.lua
index b650de1..a1e55d7 100644
--- a/official/generate_image_txt.lua
+++ b/official/generate_image_txt.lua
@@ -36,6 +36,8 @@ USAGE
 
 local dt = require "darktable"
 require "darktable.debug"
+require "official/yield"
+
 dt.configuration.check_version(...,{2,1,0},{3,0,0})
 
 dt.preferences.register("generate_image_txt",
diff --git a/official/selection_to_pdf.lua b/official/selection_to_pdf.lua
index 5a3eadc..2c2eada 100644
--- a/official/selection_to_pdf.lua
+++ b/official/selection_to_pdf.lua
@@ -34,6 +34,8 @@ Plugin allows you to choose how many thumbnails you need per row
 
 ]]
 local dt = require "darktable"
+require "official/yield"
+
 dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 dt.preferences.register