diff --git a/docs/features.txt b/docs/features.txt
index 9554954dad0..e3be413db68 100644
--- a/docs/features.txt
+++ b/docs/features.txt
@@ -318,13 +318,13 @@ Khronos, ARB, and OES extensions that are not part of any OpenGL or OpenGL ES ve
   GL_ARB_texture_filter_minmax                          DONE (nvc0/gm200+, zink)
   GL_EXT_color_buffer_half_float                        DONE (freedreno, i965, iris, llvmpipe, nv50, nvc0, radeonsi, zink)
   GL_EXT_depth_bounds_test                              DONE (i965/gen12+, nv50, nvc0, radeonsi, softpipe, zink)
-  GL_EXT_memory_object                                  DONE (radeonsi, i965/gen7+, llvmpipe)
-  GL_EXT_memory_object_fd                               DONE (radeonsi, i965/gen7+, llvmpipe)
+  GL_EXT_memory_object                                  DONE (radeonsi, i965/gen7+, llvmpipe, zink)
+  GL_EXT_memory_object_fd                               DONE (radeonsi, i965/gen7+, llvmpipe, zink)
   GL_EXT_memory_object_win32                            not started
   GL_EXT_multisampled_render_to_texture                 DONE (freedreno/a6xx, panfrost, zink)
   GL_EXT_render_snorm                                   DONE (i965, r600, radeonsi, softpipe, zink)
-  GL_EXT_semaphore                                      DONE (radeonsi, i965/gen7+)
-  GL_EXT_semaphore_fd                                   DONE (radeonsi, i965/gen7+)
+  GL_EXT_semaphore                                      DONE (radeonsi, i965/gen7+, zink)
+  GL_EXT_semaphore_fd                                   DONE (radeonsi, i965/gen7+, zink)
   GL_EXT_semaphore_win32                                not started
   GL_EXT_shader_group_vote                              DONE (all drivers that support GL_ARB_shader_group_vote)
   GL_EXT_sRGB_write_control                             DONE (all drivers that support GLES 3.0+)
diff --git a/docs/relnotes/new_features.txt b/docs/relnotes/new_features.txt
index 41fdf34d0a4..c5a6bc59f42 100644
--- a/docs/relnotes/new_features.txt
+++ b/docs/relnotes/new_features.txt
@@ -5,3 +5,4 @@ OpenSWR has been moved to the Amber branch
 radeonsi ARB_sparse_texture
 d3d12 support for shader store buffers, images, compute, indirect draw, draw params, and ARB_framebuffer_no_attachments
 radeonsi ARB_sparse_texture2
+zink EXT_memory_object, EXT_memory_object_fd, EXT_semaphore, EXT_semaphore_fd
diff --git a/src/gallium/drivers/zink/zink_screen.c b/src/gallium/drivers/zink/zink_screen.c
index f1f37bfe157..1bf96fb31e0 100644
--- a/src/gallium/drivers/zink/zink_screen.c
+++ b/src/gallium/drivers/zink/zink_screen.c
@@ -359,6 +359,11 @@ zink_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_FBFETCH:
       return 1;
 
+   case PIPE_CAP_MEMOBJ:
+      return screen->instance_info.have_KHR_external_memory_capabilities && screen->info.have_KHR_external_memory_fd;
+   case PIPE_CAP_FENCE_SIGNAL:
+      return screen->info.have_KHR_external_semaphore_fd;
+
    case PIPE_CAP_QUERY_MEMORY_INFO:
    case PIPE_CAP_NPOT_TEXTURES:
    case PIPE_CAP_TGSI_TEXCOORD: