diff --git a/thirdparty/README.md b/thirdparty/README.md
index c008680b62..d0ca54b8af 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -16,6 +16,9 @@ Files extracted from upstream source:
 - `src/*` apart from CMakeLists.txt and premake4.lua files
 - `LICENSE.txt`, and `VERSION` as `VERSION.txt`
 
+Note: Includes fixes sent upstream.
+Patch files for the changes are included in the patches folder.
+
 
 ## certs
 
diff --git a/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h
index 8d2f108fae..4db7309eec 100644
--- a/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h
+++ b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h
@@ -51,12 +51,7 @@ struct btSimdScalar
 		int m_ints[4];
 		btScalar m_unusedPadding;
 	};
-	SIMD_FORCE_INLINE __m128 get128()
-	{
-		return m_vec128;
-	}
-
-	SIMD_FORCE_INLINE const __m128 get128() const
+	SIMD_FORCE_INLINE __m128 get128() const
 	{
 		return m_vec128;
 	}
diff --git a/thirdparty/bullet/LinearMath/btVector3.h b/thirdparty/bullet/LinearMath/btVector3.h
index 9da162772c..e15a8ab391 100644
--- a/thirdparty/bullet/LinearMath/btVector3.h
+++ b/thirdparty/bullet/LinearMath/btVector3.h
@@ -1092,6 +1092,11 @@ class btVector4 : public btVector3
 		mVec128 = rhs.mVec128;
 	}
 
+	SIMD_FORCE_INLINE btVector4(const btVector4& rhs)
+	{
+		mVec128 = rhs.mVec128;
+	}
+
 	SIMD_FORCE_INLINE btVector4&
 	operator=(const btVector4& v)
 	{
diff --git a/thirdparty/bullet/patches/0001-fix-missing-copy-constructor.patch b/thirdparty/bullet/patches/0001-fix-missing-copy-constructor.patch
new file mode 100644
index 0000000000..e4b37e0dc3
--- /dev/null
+++ b/thirdparty/bullet/patches/0001-fix-missing-copy-constructor.patch
@@ -0,0 +1,16 @@
+diff --git a/thirdparty/bullet/LinearMath/btVector3.h b/thirdparty/bullet/LinearMath/btVector3.h
+index 9da16277..e15a8ab3 100644
+--- a/thirdparty/bullet/LinearMath/btVector3.h
++++ b/thirdparty/bullet/LinearMath/btVector3.h
+@@ -1092,6 +1092,11 @@ public:
+ 		mVec128 = rhs.mVec128;
+ 	}
+ 
++	SIMD_FORCE_INLINE btVector4(const btVector4& rhs)
++	{
++		mVec128 = rhs.mVec128;
++	}
++
+ 	SIMD_FORCE_INLINE btVector4&
+ 	operator=(const btVector4& v)
+ 	{
diff --git a/thirdparty/bullet/patches/0002-create-single-get128-method.patch b/thirdparty/bullet/patches/0002-create-single-get128-method.patch
new file mode 100644
index 0000000000..796a533ac3
--- /dev/null
+++ b/thirdparty/bullet/patches/0002-create-single-get128-method.patch
@@ -0,0 +1,18 @@
+diff --git a/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h
+index 8d2f108f..4db7309e 100644
+--- a/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h
++++ b/thirdparty/bullet/BulletDynamics/ConstraintSolver/btSolverBody.h
+@@ -51,12 +51,7 @@ struct btSimdScalar
+ 		int m_ints[4];
+ 		btScalar m_unusedPadding;
+ 	};
+-	SIMD_FORCE_INLINE __m128 get128()
+-	{
+-		return m_vec128;
+-	}
+-
+-	SIMD_FORCE_INLINE const __m128 get128() const
++	SIMD_FORCE_INLINE __m128 get128() const
+ 	{
+ 		return m_vec128;
+ 	}