diff --git a/pkgs/applications/video/peek/default.nix b/pkgs/applications/video/peek/default.nix
index 973df7363a26..4872b5ec2eb6 100644
--- a/pkgs/applications/video/peek/default.nix
+++ b/pkgs/applications/video/peek/default.nix
@@ -19,6 +19,8 @@
 , python3
 , libxml2
 , gst_all_1
+, which
+, gifski
 }:
 
 stdenv.mkDerivation rec {
@@ -63,7 +65,7 @@ stdenv.mkDerivation rec {
   '';
 
   preFixup = ''
-    gappsWrapperArgs+=(--prefix PATH : ${stdenv.lib.makeBinPath [ ffmpeg ]})
+    gappsWrapperArgs+=(--prefix PATH : ${stdenv.lib.makeBinPath [ which ffmpeg gifski ]})
   '';
 
   meta = with stdenv.lib; {