diff --git a/share/completions/gunzip.fish b/share/completions/gunzip.fish
index 53eeb21b8..f255db309 100644
--- a/share/completions/gunzip.fish
+++ b/share/completions/gunzip.fish
@@ -6,6 +6,7 @@ complete -c gunzip -k -x -a "(
 "
 complete -c gunzip -s f -l force -d Overwrite
 complete -c gunzip -s h -l help -d "Display help and exit"
+complete -c gunzip -s k -l keep -d "Keep input files"
 complete -c gunzip -s l -l list -d "List compression information"
 complete -c gunzip -s L -l license -d "Print license"
 complete -c gunzip -s n -l no-name -d "Do not save/restore filename"
diff --git a/share/completions/gzip.fish b/share/completions/gzip.fish
index ebbb0c6e8..004b9cb29 100644
--- a/share/completions/gzip.fish
+++ b/share/completions/gzip.fish
@@ -8,6 +8,7 @@ complete -c gzip -s d -l decompress -k -x -a "
 
 complete -c gzip -s f -l force -d Overwrite
 complete -c gzip -s h -l help -d "Display help and exit"
+complete -c gzip -s k -l keep -d "Keep input files"
 complete -c gzip -s l -l list -d "List compression information"
 complete -c gzip -s L -l license -d "Print license"
 complete -c gzip -s n -l no-name -d "Do not save/restore filename"