diff --git a/3rdparty/ocornut-imgui/imgui.cpp b/3rdparty/ocornut-imgui/imgui.cpp
index 109337d60..f60c4eac5 100644
--- a/3rdparty/ocornut-imgui/imgui.cpp
+++ b/3rdparty/ocornut-imgui/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.51 WIP
+// dear imgui, v1.51
 // (main code and documentation)
 
 // See ImGui::ShowTestWindow() in imgui_demo.cpp for demo code.
@@ -705,7 +705,7 @@ ImGuiStyle::ImGuiStyle()
     Colors[ImGuiCol_WindowBg]               = ImVec4(0.00f, 0.00f, 0.00f, 0.70f);
     Colors[ImGuiCol_ChildWindowBg]          = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
     Colors[ImGuiCol_PopupBg]                = ImVec4(0.05f, 0.05f, 0.10f, 0.90f);
-    Colors[ImGuiCol_Border]                 = ImVec4(0.70f, 0.70f, 0.70f, 0.22f);
+    Colors[ImGuiCol_Border]                 = ImVec4(0.70f, 0.70f, 0.70f, 0.40f);
     Colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
     Colors[ImGuiCol_FrameBg]                = ImVec4(0.80f, 0.80f, 0.80f, 0.30f);   // Background of checkbox, radio button, plot, slider, text input
     Colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.90f, 0.80f, 0.80f, 0.40f);
diff --git a/3rdparty/ocornut-imgui/imgui.h b/3rdparty/ocornut-imgui/imgui.h
index 57220de98..d2f378341 100644
--- a/3rdparty/ocornut-imgui/imgui.h
+++ b/3rdparty/ocornut-imgui/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.51 WIP
+// dear imgui, v1.51
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -16,7 +16,7 @@
 #include <stddef.h>         // ptrdiff_t, NULL
 #include <string.h>         // memset, memmove, memcpy, strlen, strchr, strcpy, strcmp
 
-#define IMGUI_VERSION       "1.51 WIP"
+#define IMGUI_VERSION       "1.51"
 
 // Define attributes of all API symbols declarations, e.g. for DLL under Windows.
 #ifndef IMGUI_API
diff --git a/3rdparty/ocornut-imgui/imgui_demo.cpp b/3rdparty/ocornut-imgui/imgui_demo.cpp
index 4ebc0fd82..1aae93174 100644
--- a/3rdparty/ocornut-imgui/imgui_demo.cpp
+++ b/3rdparty/ocornut-imgui/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.51 WIP
+// dear imgui, v1.51
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:
@@ -192,7 +192,7 @@ void ImGui::ShowTestWindow(bool* p_open)
     //ImGui::PushItemWidth(ImGui::GetWindowWidth() * 0.65f);    // 2/3 of the space for widget and 1/3 for labels
     ImGui::PushItemWidth(-140);                                 // Right align, keep 140 pixels for labels
 
-    ImGui::Text("Dear ImGui says hello.");
+    ImGui::Text("dear imgui says hello. (%s)", IMGUI_VERSION);
 
     // Menu
     if (ImGui::BeginMenuBar())
@@ -1575,6 +1575,7 @@ void ImGui::ShowTestWindow(bool* p_open)
 
         if (ImGui::TreeNode("Borders"))
         {
+            // NB: Future columns API should allow automatic horizontal borders.
             static bool h_borders = true;
             static bool v_borders = true;
             ImGui::Checkbox("horizontal", &h_borders);
diff --git a/3rdparty/ocornut-imgui/imgui_draw.cpp b/3rdparty/ocornut-imgui/imgui_draw.cpp
index e5329cf0e..bca7281a9 100644
--- a/3rdparty/ocornut-imgui/imgui_draw.cpp
+++ b/3rdparty/ocornut-imgui/imgui_draw.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.51 WIP
+// dear imgui, v1.51
 // (drawing and font code)
 
 // Contains implementation for
diff --git a/3rdparty/ocornut-imgui/imgui_internal.h b/3rdparty/ocornut-imgui/imgui_internal.h
index e59a27edb..cee3f7333 100644
--- a/3rdparty/ocornut-imgui/imgui_internal.h
+++ b/3rdparty/ocornut-imgui/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.51 WIP
+// dear imgui, v1.51
 // (internals)
 
 // You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!