diff --git a/pkgs/tools/games/opentracker/deps.nix b/pkgs/tools/games/opentracker/deps.nix
index 3d6944b66724..fb3427dbbb49 100644
--- a/pkgs/tools/games/opentracker/deps.nix
+++ b/pkgs/tools/games/opentracker/deps.nix
@@ -25,11 +25,12 @@
   (fetchNuGet { name = "HarfBuzzSharp"; version = "2.6.1.7"; sha256 = "0xm4dr6cs5n1ywbbpp1jrxfk8rn1iy61kdm29kb6bqj1q0gv8zyv"; })
   (fetchNuGet { name = "HarfBuzzSharp.NativeAssets.Linux"; version = "2.6.1.7"; sha256 = "1slackrhcwsjn3f6sa0nlrcynzmx5pbqv8j33l9w6z9w7ssq4wkn"; })
   (fetchNuGet { name = "JetBrains.Annotations"; version = "2020.3.0"; sha256 = "04xlfqnfg3069f014q8f0vx7y70m8nldbf9fia4b50bp3rry2lv2"; })
+  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.linux-x64"; version = "3.1.21"; sha256 = "056g9nv8a7n8zdbgzmyzmn3pbg52yq2kv5d1rcp7h6plwzgpiwql"; })
+  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.osx-x64"; version = "3.1.21"; sha256 = "0akdzi35497v8yxr3a9q1g26cnx9vxnwv81kwxi293jklwnx8gsr"; })
+  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.win-x64"; version = "3.1.21"; sha256 = "16kya6xvi7k42sr8bxgpbz9116dj7g3i18ylpvji9qngdx41891v"; })
+  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.win-x86"; version = "3.1.21"; sha256 = "0rd3w3i6fzwhi71jcr8i0mchgfgpp1a0qhancg4dxsva032as4s6"; })
   (fetchNuGet { name = "Microsoft.AspNetCore.App.Ref"; version = "3.1.10"; sha256 = "0xn4zh7shvijqlr03fqsmps6gz856isd9bg9rk4z2c4599ggal77"; })
-  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.linux-x64"; version = "3.1.19"; sha256 = "19z4zrchaxcz0a33c33n1qd11z9khj4323nfzsbzah0xxkkj8ka8"; })
-  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.osx-x64"; version = "3.1.19"; sha256 = "0fhj1q9zdy5nqxppjgr8ayqlc2b9zfbrs7h3zc1wlg9xxbzk944y"; })
-  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.win-x64"; version = "3.1.19"; sha256 = "0cbic6d8ck79fgg7hngfvsdyd9aj6zanf6c36lzdydvqvjza1l48"; })
-  (fetchNuGet { name = "Microsoft.AspNetCore.App.Runtime.win-x86"; version = "3.1.19"; sha256 = "040rbbxgcqks2f81x2sr8bnrarxygadzv84ksfpwcdw5xjnqj5c9"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Ref"; version = "3.1.0"; sha256 = "08svsiilx9spvjamcnjswv0dlpdrgryhr3asdz7cvnl914gjzq4y"; })
   (fetchNuGet { name = "Microsoft.CodeAnalysis.Analyzers"; version = "3.3.2"; sha256 = "162vb5894zxps0cf5n9gc08an7gwybzz87allx3lsszvllr9ldx4"; })
   (fetchNuGet { name = "Microsoft.CodeAnalysis.Common"; version = "3.9.0"; sha256 = "1x6l6kn8iv5gk1545nxs2gwzkb8gj4sb9kryai132l7yg9afjqik"; })
   (fetchNuGet { name = "Microsoft.CodeAnalysis.CSharp"; version = "3.9.0"; sha256 = "0crb9x5rhija8y7b0iya9axcvinz2hv3bgf80bvz7kv6zpbpszkz"; })
@@ -39,15 +40,14 @@
   (fetchNuGet { name = "Microsoft.CodeCoverage"; version = "16.9.1"; sha256 = "18isx8w4kwnlk6hq5ay8i4lgzwhx0zg9brayfdk2lakagvv6yyaf"; })
   (fetchNuGet { name = "Microsoft.CSharp"; version = "4.0.1"; sha256 = "0zxc0apx1gcx361jlq8smc9pfdgmyjh6hpka8dypc9w23nlsh6yj"; })
   (fetchNuGet { name = "Microsoft.CSharp"; version = "4.7.0"; sha256 = "0gd67zlw554j098kabg887b5a6pq9kzavpa3jjy5w53ccjzjfy8j"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Host.linux-x64"; version = "3.1.19"; sha256 = "10fs93kg8vhhm1l05815m8yqz796i6gk824pk1bps239mshmkybr"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Host.osx-x64"; version = "3.1.19"; sha256 = "1yqkh1z643vfxs2qkhc4h8403ha29f3kpj28cm067zsyr0jn1zbx"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Host.win-x64"; version = "3.1.19"; sha256 = "1069h3yznipl44gzx0r7srg5yfhkp8v552g1pl7rdnwrbi1xfrbg"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Host.win-x86"; version = "3.1.19"; sha256 = "19vkqpw5j0zd6b06npx934idjq90av0rhsvcx01z6hlhg80ajr14"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Ref"; version = "3.1.0"; sha256 = "08svsiilx9spvjamcnjswv0dlpdrgryhr3asdz7cvnl914gjzq4y"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.linux-x64"; version = "3.1.19"; sha256 = "10c9bq1z8j173n9jzamgplbxq101yscwdhksshn1ybisn7cr5g0h"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.osx-x64"; version = "3.1.19"; sha256 = "0av8fnjmjmws9h1r49ga7an9180z156dii3n0crwmn9fwdw2l7g2"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.win-x64"; version = "3.1.19"; sha256 = "19rw3hpr32x4kwlx7drd2f522pkvhgpscjldg0rg40z6ki3biykd"; })
-  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.win-x86"; version = "3.1.19"; sha256 = "17kxfradsfdf8cr506izmb3lhgy4kg7ij82cjdx6nxwkpaq96ykw"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Host.linux-x64"; version = "3.1.21"; sha256 = "01kbhi29lhv6mg1zfsyakz3z8hfbxnc0kxy0fczl8xqviik9svx7"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Host.osx-x64"; version = "3.1.21"; sha256 = "1s5g9gk0hvs268q2zpc32m0my2m2ivlmsmza86797a9vkxr6pzw6"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Host.win-x64"; version = "3.1.21"; sha256 = "0dl4yakfmdkx6xr18f09cdnl11b4fyp23jg3msr8a25zqdqvcr29"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Host.win-x86"; version = "3.1.21"; sha256 = "1l5wh5c9bgnzph07cd72q08mr87lsczwl0vy0rzrsi7xpzryvw7l"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.linux-x64"; version = "3.1.21"; sha256 = "13692wqcww0w6x4nhyxpxwprdg6mx9xmlvv38m6fvp6g0m27r43v"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.osx-x64"; version = "3.1.21"; sha256 = "1p7fpcmx4m2374zjfh53i3mv4lkr8xrkz5lnawv95s7j005m07pc"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.win-x64"; version = "3.1.21"; sha256 = "02zgxzf8l607mh17900n7msga0yfcnqgd70rj1rlwj23plifykx1"; })
+  (fetchNuGet { name = "Microsoft.NETCore.App.Runtime.win-x86"; version = "3.1.21"; sha256 = "1gsrajdhlyndwb0s1c03cbm7wh1yfiwpk075nrlfvicbc4m7h347"; })
   (fetchNuGet { name = "Microsoft.NETCore.Platforms"; version = "1.0.1"; sha256 = "01al6cfxp68dscl15z7rxfw9zvhm64dncsw09a1vmdkacsa2v6lr"; })
   (fetchNuGet { name = "Microsoft.NETCore.Platforms"; version = "1.1.0"; sha256 = "08vh1r12g6ykjygq5d3vq09zylgb84l63k49jc4v8faw9g93iqqm"; })
   (fetchNuGet { name = "Microsoft.NETCore.Platforms"; version = "5.0.0"; sha256 = "0mwpwdflidzgzfx2dlpkvvnkgkr2ayaf0s80737h4wa35gaj11rc"; })