diff --git a/Directory.Build.props b/Directory.Build.props
index 8c27ee3ec..7ed6fb6e8 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -6,8 +6,8 @@
     <CultLibRevision>45c2f4006f5f7dab357426cabd3197e8d0a17f66</CultLibRevision>
     <CultMathRoot Condition="'$(CultMathRoot)' == '' and '$(CULTMATH_ROOT)' != ''">$(CULTMATH_ROOT)</CultMathRoot>
     <CultMathRoot Condition="'$(CultMathRoot)' == ''">$(CultLibRoot)</CultMathRoot>
-    <!-- CultMath: cultmath-unity-v0.3.0 in Packages/manifest.json. -->
-    <CultMathRevision>614fd445845f6251ee2986707beecea0bb211791</CultMathRevision>
+    <!-- CultMath: cultmath-unity-v0.4.0 in Packages/manifest.json. -->
+    <CultMathRevision>252e226c51826d626f4113673f31d96577b67ec9</CultMathRevision>
     <GitExecutable Condition="'$(GitExecutable)' == '' and Exists('C:\Program Files\Git\cmd\git.exe')">C:\Program Files\Git\cmd\git.exe</GitExecutable>
     <GitExecutable Condition="'$(GitExecutable)' == ''">git</GitExecutable>
   </PropertyGroup>
diff --git a/Packages/manifest.json b/Packages/manifest.json
index e5e0d240e..a04f36e20 100644
--- a/Packages/manifest.json
+++ b/Packages/manifest.json
@@ -54,6 +54,6 @@
     "com.unity.modules.xr": "1.0.0",
     "org.gamecult.caching.unity": "https://github.com/GameCult/CultLib.git?path=/src/GameCult.Unity/Assets/Caching#caching-unity-v1.4.0",
     "org.gamecult.cultlib": "https://github.com/GameCult/CultLib.git?path=/unity/org.gamecult.cultlib#cultlib-unity-v1.0.60",
-    "org.gamecult.cultmath": "https://github.com/GameCult/CultLib.git?path=/packages/cultmath/unity/org.gamecult.cultmath#cultmath-unity-v0.3.0"
+    "org.gamecult.cultmath": "https://github.com/GameCult/CultLib.git?path=/packages/cultmath/unity/org.gamecult.cultmath#cultmath-unity-v0.4.0"
   }
 }
diff --git a/Packages/packages-lock.json b/Packages/packages-lock.json
index 69c2afb7c..f4c128708 100644
--- a/Packages/packages-lock.json
+++ b/Packages/packages-lock.json
@@ -272,11 +272,11 @@
       "hash": "45c2f4006f5f7dab357426cabd3197e8d0a17f66"
     },
     "org.gamecult.cultmath": {
-      "version": "https://github.com/GameCult/CultLib.git?path=/packages/cultmath/unity/org.gamecult.cultmath#cultmath-unity-v0.3.0",
+      "version": "https://github.com/GameCult/CultLib.git?path=/packages/cultmath/unity/org.gamecult.cultmath#cultmath-unity-v0.4.0",
       "depth": 0,
       "source": "git",
       "dependencies": {},
-      "hash": "614fd445845f6251ee2986707beecea0bb211791"
+      "hash": "252e226c51826d626f4113673f31d96577b67ec9"
     },
     "com.unity.modules.accessibility": {
       "version": "1.0.0",