diff --git a/CHANGES b/CHANGES
index 0c3e968940..ffc08e36bc 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,10 @@
+
+4.1.0-dev.708 | 2021-06-07 09:22:36 +0200
+
+  * Improve assignment operators for IntrusivePtr. (Dominik Charousset, Corelight)
+
+  * Fix docs for `ProcStats`: `mem` is in bytes, not KB. (Arne Welzel, Corelight)
+
 4.1.0-dev.704 | 2021-06-04 08:29:18 -0700
 
   * Add deprecated headers for UDP and ICMP analyzers (Tim Wojtulewicz, Corelight)
diff --git a/VERSION b/VERSION
index b46f9cccca..980b1ff835 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.0-dev.704
+4.1.0-dev.708
diff --git a/src/IntrusivePtr.h b/src/IntrusivePtr.h
index 7ad37031c8..cb09e9c9f8 100644
--- a/src/IntrusivePtr.h
+++ b/src/IntrusivePtr.h
@@ -137,12 +137,29 @@ public:
 		return std::exchange(ptr_, nullptr);
 		}
 
-	IntrusivePtr& operator=(IntrusivePtr other) noexcept
+	IntrusivePtr& operator=(const IntrusivePtr& other) noexcept
+		{
+		IntrusivePtr tmp{other};
+		swap(tmp);
+		return *this;
+		}
+
+	IntrusivePtr& operator=(IntrusivePtr&& other) noexcept
 		{
 		swap(other);
 		return *this;
 		}
 
+	IntrusivePtr& operator=(std::nullptr_t) noexcept
+		{
+		if ( ptr_ )
+			{
+			Unref(ptr_);
+			ptr_ = nullptr;
+			}
+		return *this;
+		}
+
 	pointer get() const noexcept
 		{
 		return ptr_;