diff --git a/flake.lock b/flake.lock
index f07bd3b..357b474 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,17 +2,19 @@
   "nodes": {
     "devshell": {
       "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
         "nixpkgs": [
           "nixpkgs"
-        ],
-        "systems": "systems"
+        ]
       },
       "locked": {
-        "lastModified": 1701787589,
-        "narHash": "sha256-ce+oQR4Zq9VOsLoh9bZT8Ip9PaMLcjjBUHVPzW5d7Cw=",
+        "lastModified": 1705332421,
+        "narHash": "sha256-USpGLPme1IuqG78JNqSaRabilwkCyHmVWY0M9vYyqEA=",
         "owner": "numtide",
         "repo": "devshell",
-        "rev": "44ddedcbcfc2d52a76b64fb6122f209881bd3e1e",
+        "rev": "83cb93d6d063ad290beee669f4badf9914cc16ec",
         "type": "github"
       },
       "original": {
@@ -32,11 +34,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1702261362,
-        "narHash": "sha256-HfqACilfmnXli3G+t6lxqniL/Z6OwRBplR/CRU+d9oM=",
+        "lastModified": 1705423993,
+        "narHash": "sha256-kZtmuGdBzKT6vFbzVZqe9vm7ckkowSQz1Ln1ItvU3+A=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "61c35019e3080f199aae18b978c06ffdc4153e32",
+        "rev": "0272f04189d187055b300c77178cce855382cc55",
         "type": "github"
       },
       "original": {
@@ -47,14 +49,14 @@
     },
     "flake-utils": {
       "inputs": {
-        "systems": "systems_2"
+        "systems": "systems"
       },
       "locked": {
-        "lastModified": 1701680307,
-        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
         "type": "github"
       },
       "original": {
@@ -65,11 +67,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1702151865,
-        "narHash": "sha256-9VAt19t6yQa7pHZLDbil/QctAgVsA66DLnzdRGqDisg=",
+        "lastModified": 1705133751,
+        "narHash": "sha256-rCIsyE80jgiOU78gCWN3A0wE0tR2GI5nH6MlS+HaaSQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "666fc80e7b2afb570462423cb0e1cf1a3a34fedd",
+        "rev": "9b19f5e77dd906cb52dade0b7bd280339d2a1f3d",
         "type": "github"
       },
       "original": {
@@ -81,16 +83,16 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1701805708,
-        "narHash": "sha256-hh0S14E816Img0tPaNQSEKFvSscSIrvu1ypubtfh6M4=",
+        "lastModified": 1705331948,
+        "narHash": "sha256-qjQXfvrAT1/RKDFAMdl8Hw3m4tLVvMCc8fMqzJv0pP4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0561103cedb11e7554cf34cea81e5f5d578a4753",
+        "rev": "b8dd8be3c790215716e7c12b247f45ca525867e2",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-23.05",
+        "ref": "nixos-23.11",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -117,21 +119,6 @@
         "repo": "default",
         "type": "github"
       }
-    },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 93a9602..d684c7d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,10 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     devshell = {
       url = "github:numtide/devshell";
-      inputs.nixpkgs.follows = "nixpkgs";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
     };
     emacs-overlay = {
       url = "github:nix-community/emacs-overlay";
@@ -26,7 +29,8 @@
         };
         full-texlive = pkgs.texlive.combine { inherit (pkgs.texlive) scheme-full; inherit ugent2016; };
         build-diffed = pkgs.writeShellScriptBin "build-diffed" ''
-          PATH=$PATH:${pkgs.python3.withPackages (ps: [ ps.pygments ]).bin}
+          export OSFONTDIR=./fonts/
+          PATH=$PATH:${pkgs.python3.withPackages (ps: [ ps.pygments ])}/bin
           set -E
           atexit() {
             git worktree remove -f .sent
@@ -107,6 +111,12 @@
             pkgs.nixpkgs-fmt
             (pkgs.python3.withPackages (ps: [ ps.pygments ]))
           ];
+          env = [
+            {
+              name = "OSFONTDIR";
+              value = "./fonts";
+            }
+          ];
           commands = [
             {
               name = "clean";
diff --git a/fonts/UGentPannoText.ttf b/fonts/UGentPannoText.ttf
new file mode 100644
index 0000000..9ffe8a6
Binary files /dev/null and b/fonts/UGentPannoText.ttf differ
diff --git a/fonts/UGentPannoTextMedium.ttf b/fonts/UGentPannoTextMedium.ttf
new file mode 100644
index 0000000..7ed6cbf
Binary files /dev/null and b/fonts/UGentPannoTextMedium.ttf differ
diff --git a/fonts/UGentPannoTextSemiBold.ttf b/fonts/UGentPannoTextSemiBold.ttf
new file mode 100644
index 0000000..23de5a7
Binary files /dev/null and b/fonts/UGentPannoTextSemiBold.ttf differ
diff --git a/fonts/UGentPannoTextSemiLight.ttf b/fonts/UGentPannoTextSemiLight.ttf
new file mode 100644
index 0000000..b6817b2
Binary files /dev/null and b/fonts/UGentPannoTextSemiLight.ttf differ