diff --git a/scripts/_common.sh b/scripts/_common.sh
index dcada09..64b4c6f 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -86,6 +86,13 @@ function build_ui {
     cp -rT "$install_dir/sources/ui/build" "$install_dir/output/ui"
 }
 
+function cleanup_sources {
+    ynh_secure_remove --file="$install_dir/libheif"
+    ynh_secure_remove --file="$install_dir/sources"
+    ynh_secure_remove --file="$install_dir/go"
+    ynh_secure_remove --file="$install_dir/.cache/go-build"
+}
+
 #=================================================
 # EXPERIMENTAL HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index e84a404..0db6ebf 100755
--- a/scripts/install
+++ b/scripts/install
@@ -46,6 +46,8 @@ build_api
 ynh_script_progression --message="Building static UI files..." --weight=10
 build_ui
 
+cleanup_sources
+
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index f077fb1..d2ae849 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -64,6 +64,8 @@ build_api
 ynh_script_progression --message="Building static UI files..." --weight=45
 build_ui
 
+cleanup_sources
+
 #=================================================
 # UPDATE A CONFIG FILE
 #=================================================