diff --git a/pkgs/shells/nix-bash-completions/default.nix b/pkgs/shells/nix-bash-completions/default.nix
index bb945f404215..fb6fa24ac334 100644
--- a/pkgs/shells/nix-bash-completions/default.nix
+++ b/pkgs/shells/nix-bash-completions/default.nix
@@ -1,14 +1,14 @@
 { stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
-  version = "0.6.2";
+  version = "0.6.3";
   name = "nix-bash-completions-${version}";
 
   src = fetchFromGitHub {
     owner = "hedning";
     repo = "nix-bash-completions";
     rev = "v${version}";
-    sha256 = "0w6mimi70drjkdpx5pcw66xy2a4kysjfzmank0kc5vbhrjgkjwyp";
+    sha256 = "1zmk9f53xpwk5j6qqisjlddgm2fr68p1q6pn3wa14bd777lranhj";
   };
 
   # To enable lazy loading via. bash-completion we need a symlink to the script
diff --git a/pkgs/shells/nix-zsh-completions/default.nix b/pkgs/shells/nix-zsh-completions/default.nix
index 29fb065a6f8b..2bcff6b809dc 100644
--- a/pkgs/shells/nix-zsh-completions/default.nix
+++ b/pkgs/shells/nix-zsh-completions/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchFromGitHub }:
 
 let
-  version = "0.3.7";
+  version = "0.3.8";
 in
 
 stdenv.mkDerivation rec {
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     owner = "spwhitt";
     repo = "nix-zsh-completions";
     rev = "${version}";
-    sha256 = "164x8awia56z481r898pbywjgrx8fv8gfw8pxp4qgbxzp3gwq9iy";
+    sha256 = "05ynd38br2kn657g7l01jg1q8ja9xwrdyb95w02gh7j9cww2k06w";
   };
 
   installPhase = ''