diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 3f534813908..4c353c22b62 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -10272,15 +10272,6 @@
     githubId = 1219785;
     name = "Félix Baylac-Jacqué";
   };
-  ninjin = {
-    email = "pontus@stenetorp.se";
-    github = "ninjin";
-    githubId = 354934;
-    name = "Pontus Stenetorp";
-    keys = [{
-      fingerprint = "0966 2F9F 3FDA C22B C22E  4CE1 D430 2875 00E6 483C";
-    }];
-  };
   nioncode = {
     email = "nioncode+github@gmail.com";
     github = "nioncode";
diff --git a/pkgs/development/compilers/julia/1.6-bin.nix b/pkgs/development/compilers/julia/1.6-bin.nix
index 79203ce7e0a..cf72457a143 100644
--- a/pkgs/development/compilers/julia/1.6-bin.nix
+++ b/pkgs/development/compilers/julia/1.6-bin.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     homepage = "https://julialang.org";
     # Bundled and linked with various GPL code, although Julia itself is MIT.
     license = lib.licenses.gpl2Plus;
-    maintainers = with lib.maintainers; [ ninjin raskin ];
+    maintainers = with lib.maintainers; [ raskin ];
     platforms = [ "x86_64-linux" ];
     mainProgram = "julia";
   };
diff --git a/pkgs/development/compilers/julia/1.8-bin.nix b/pkgs/development/compilers/julia/1.8-bin.nix
index 198eeb44554..24eac49df9d 100644
--- a/pkgs/development/compilers/julia/1.8-bin.nix
+++ b/pkgs/development/compilers/julia/1.8-bin.nix
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
     homepage = "https://julialang.org";
     # Bundled and linked with various GPL code, although Julia itself is MIT.
     license = lib.licenses.gpl2Plus;
-    maintainers = with lib.maintainers; [ ninjin raskin nickcao wegank ];
+    maintainers = with lib.maintainers; [ raskin nickcao wegank ];
     platforms = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
     mainProgram = "julia";
   };
diff --git a/pkgs/development/tools/misc/om4/default.nix b/pkgs/development/tools/misc/om4/default.nix
index 30f1bb273fd..4425ae52fb5 100644
--- a/pkgs/development/tools/misc/om4/default.nix
+++ b/pkgs/development/tools/misc/om4/default.nix
@@ -22,6 +22,6 @@ stdenv.mkDerivation rec {
     license = with licenses; [ bsd2 bsd3 isc publicDomain ];
     mainProgram = "m4";
     platforms = platforms.unix;
-    maintainers = [ maintainers.ninjin ];
+    maintainers = [ ];
   };
 }
diff --git a/pkgs/tools/networking/fdm/default.nix b/pkgs/tools/networking/fdm/default.nix
index c67ceec69e8..731fe83dc9b 100644
--- a/pkgs/tools/networking/fdm/default.nix
+++ b/pkgs/tools/networking/fdm/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "Mail fetching and delivery tool - should do the job of getmail and procmail";
-    maintainers = with maintainers; [ ninjin raskin ];
+    maintainers = with maintainers; [ raskin ];
     platforms = with platforms; linux;
     homepage = "https://github.com/nicm/fdm";
     downloadPage = "https://github.com/nicm/fdm/releases";