diff --git a/pkgs/data/fonts/fira-mono/default.nix b/pkgs/data/fonts/fira-mono/default.nix
index 976fb68d79f6..8299153aa2cc 100644
--- a/pkgs/data/fonts/fira-mono/default.nix
+++ b/pkgs/data/fonts/fira-mono/default.nix
@@ -1,16 +1,16 @@
 { stdenv, fetchurl, unzip }:
 
 stdenv.mkDerivation rec {
-  name = "fira-mono-3.204";
+  name = "fira-mono-3.205";
 
   src = fetchurl {
-    url = http://www.carrois.com/downloads/fira_mono_3_2/FiraMonoFonts3204.zip;
-    sha256 = "0pnsw7b1i5vkwq0kny4lxzly4h8rlwkj610rykhax6zayfbnz62a";
+    url = http://www.carrois.com/downloads/fira_mono_3_2/FiraMonoFonts3205.zip;
+    sha256 = "0zd4wy8ksbz0qiiqgl9w7zyh34q8n983dyb44g5dfdcjakj09qlz";
   };
 
   buildInputs = [ unzip ];
   phases = [ "unpackPhase" "installPhase" ];
-  sourceRoot = "FiraMonoFonts3204";
+  sourceRoot = "FiraMonoFonts3205";
 
   installPhase = ''
     mkdir -p $out/share/fonts/opentype
diff --git a/pkgs/data/fonts/fira/default.nix b/pkgs/data/fonts/fira/default.nix
index b8db1132b7c5..18373439ab03 100644
--- a/pkgs/data/fonts/fira/default.nix
+++ b/pkgs/data/fonts/fira/default.nix
@@ -1,16 +1,16 @@
 { stdenv, fetchurl, unzip }:
 
 stdenv.mkDerivation rec {
-  name = "fira-4.104";
+  name = "fira-4.105";
 
   src = fetchurl {
-    url = http://www.carrois.com/downloads/fira_4_1/FiraFonts4104.zip;
-    sha256 = "1i8l0x2wdx4pw7j52lgy8qcx0wqj0azwjiq0wa9kg26x78bdfk2d";
+    url = http://www.carrois.com/downloads/fira_4_1/FiraFonts4105.zip;
+    sha256 = "1857kpn7p7fc1xsmqx9589hk396ggwzd167yc3dmn1mh5dixibfz";
   };
 
   buildInputs = [unzip];
   phases = [ "unpackPhase" "installPhase" ];
-  sourceRoot = "FiraFonts4104";
+  sourceRoot = "FiraFonts4105";
 
   installPhase = ''
     mkdir -p $out/share/fonts/opentype