diff --git a/osu.Desktop/osu.Desktop.csproj b/osu.Desktop/osu.Desktop.csproj
index e4e9807754..4a1798feb4 100644
--- a/osu.Desktop/osu.Desktop.csproj
+++ b/osu.Desktop/osu.Desktop.csproj
@@ -135,8 +135,8 @@
       <HintPath>$(SolutionDir)\packages\squirrel.windows.1.7.8\lib\Net45\NuGet.Squirrel.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="SharpCompress, Version=0.18.1.0, Culture=neutral, PublicKeyToken=afb0a02973931d96, processorArchitecture=MSIL">
diff --git a/osu.Desktop/packages.config b/osu.Desktop/packages.config
index 6b6361b578..e7233a42ac 100644
--- a/osu.Desktop/packages.config
+++ b/osu.Desktop/packages.config
@@ -6,7 +6,7 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
 <packages>
   <package id="DeltaCompressionDotNet" version="1.1.0" targetFramework="net45" />
   <package id="Mono.Cecil" version="0.9.6.4" targetFramework="net45" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
   <package id="SharpCompress" version="0.18.1" targetFramework="net461" />
   <package id="Splat" version="2.0.0" targetFramework="net45" />
   <package id="SQLitePCLRaw.bundle_green" version="1.1.8" targetFramework="net461" />
diff --git a/osu.Game.Rulesets.Catch/osu.Game.Rulesets.Catch.csproj b/osu.Game.Rulesets.Catch/osu.Game.Rulesets.Catch.csproj
index b03c8d2eea..578d8eb34d 100644
--- a/osu.Game.Rulesets.Catch/osu.Game.Rulesets.Catch.csproj
+++ b/osu.Game.Rulesets.Catch/osu.Game.Rulesets.Catch.csproj
@@ -36,8 +36,8 @@
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
diff --git a/osu.Game.Rulesets.Catch/packages.config b/osu.Game.Rulesets.Catch/packages.config
index cde428acea..2369f7529b 100644
--- a/osu.Game.Rulesets.Catch/packages.config
+++ b/osu.Game.Rulesets.Catch/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
 </packages>
\ No newline at end of file
diff --git a/osu.Game.Rulesets.Mania/osu.Game.Rulesets.Mania.csproj b/osu.Game.Rulesets.Mania/osu.Game.Rulesets.Mania.csproj
index 26181164f9..bdd6656ed9 100644
--- a/osu.Game.Rulesets.Mania/osu.Game.Rulesets.Mania.csproj
+++ b/osu.Game.Rulesets.Mania/osu.Game.Rulesets.Mania.csproj
@@ -36,8 +36,8 @@
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
diff --git a/osu.Game.Rulesets.Mania/packages.config b/osu.Game.Rulesets.Mania/packages.config
index cde428acea..2369f7529b 100644
--- a/osu.Game.Rulesets.Mania/packages.config
+++ b/osu.Game.Rulesets.Mania/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
 </packages>
\ No newline at end of file
diff --git a/osu.Game.Rulesets.Osu/osu.Game.Rulesets.Osu.csproj b/osu.Game.Rulesets.Osu/osu.Game.Rulesets.Osu.csproj
index ec71869adb..6e61d7fb2d 100644
--- a/osu.Game.Rulesets.Osu/osu.Game.Rulesets.Osu.csproj
+++ b/osu.Game.Rulesets.Osu/osu.Game.Rulesets.Osu.csproj
@@ -37,8 +37,8 @@
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
diff --git a/osu.Game.Rulesets.Osu/packages.config b/osu.Game.Rulesets.Osu/packages.config
index cde428acea..2369f7529b 100644
--- a/osu.Game.Rulesets.Osu/packages.config
+++ b/osu.Game.Rulesets.Osu/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
 </packages>
\ No newline at end of file
diff --git a/osu.Game.Rulesets.Taiko/osu.Game.Rulesets.Taiko.csproj b/osu.Game.Rulesets.Taiko/osu.Game.Rulesets.Taiko.csproj
index bd0d199772..7e44e85e52 100644
--- a/osu.Game.Rulesets.Taiko/osu.Game.Rulesets.Taiko.csproj
+++ b/osu.Game.Rulesets.Taiko/osu.Game.Rulesets.Taiko.csproj
@@ -36,8 +36,8 @@
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
diff --git a/osu.Game.Rulesets.Taiko/packages.config b/osu.Game.Rulesets.Taiko/packages.config
index cde428acea..2369f7529b 100644
--- a/osu.Game.Rulesets.Taiko/packages.config
+++ b/osu.Game.Rulesets.Taiko/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
 </packages>
\ No newline at end of file
diff --git a/osu.Game.Tests/osu.Game.Tests.csproj b/osu.Game.Tests/osu.Game.Tests.csproj
index e0b9eb4091..df66896d9b 100644
--- a/osu.Game.Tests/osu.Game.Tests.csproj
+++ b/osu.Game.Tests/osu.Game.Tests.csproj
@@ -37,8 +37,8 @@
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
diff --git a/osu.Game.Tests/packages.config b/osu.Game.Tests/packages.config
index e09f2a07ba..c2056e09a8 100644
--- a/osu.Game.Tests/packages.config
+++ b/osu.Game.Tests/packages.config
@@ -6,6 +6,6 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
 <packages>
   <package id="DeepEqual" version="1.6.0.0" targetFramework="net461" />
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net461" />
 </packages>
\ No newline at end of file
diff --git a/osu.Game/osu.Game.csproj b/osu.Game/osu.Game.csproj
index b5f93123fd..7d146c0a12 100644
--- a/osu.Game/osu.Game.csproj
+++ b/osu.Game/osu.Game.csproj
@@ -143,8 +143,8 @@
       <HintPath>$(SolutionDir)\packages\NUnit.3.8.1\lib\net45\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00009\lib\net20\OpenTK.dll</HintPath>
+    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4">
+      <HintPath>$(SolutionDir)\packages\OpenTK.3.0.0-git00021\lib\net20\OpenTK.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Remotion.Linq, Version=2.1.0.0, Culture=neutral, PublicKeyToken=fee00910d6e5f53b, processorArchitecture=MSIL">
diff --git a/osu.Game/packages.config b/osu.Game/packages.config
index 02ace918de..3ba50388e8 100644
--- a/osu.Game/packages.config
+++ b/osu.Game/packages.config
@@ -66,7 +66,7 @@ Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/maste
   <package id="Microsoft.Extensions.Primitives" version="2.0.0" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
   <package id="NUnit" version="3.8.1" targetFramework="net461" />
-  <package id="OpenTK" version="3.0.0-git00009" targetFramework="net461" />
+  <package id="OpenTK" version="3.0.0-git00021" targetFramework="net461" />
   <package id="Remotion.Linq" version="2.1.2" targetFramework="net461" />
   <package id="SharpCompress" version="0.18.1" targetFramework="net461" />
   <package id="SQLitePCLRaw.bundle_green" version="1.1.8" targetFramework="net461" />