diff --git a/bam.lua b/bam.lua
index 1c25e48a4..c378117b4 100644
--- a/bam.lua
+++ b/bam.lua
@@ -140,6 +140,7 @@ if family == "windows" then
 		table.insert(client_depends, CopyToDirectory(".", "other\\curl\\windows\\lib64\\ssleay32.dll"))
 		table.insert(client_depends, CopyToDirectory(".", "other\\curl\\windows\\lib64\\zlib1.dll"))
 
+		table.insert(client_depends, CopyToDirectory(".", "other\\opus\\windows\\lib64\\libwinpthread-1.dll"))
 		table.insert(client_depends, CopyToDirectory(".", "other\\opus\\windows\\lib64\\libgcc_s_seh-1.dll"))
 		table.insert(client_depends, CopyToDirectory(".", "other\\opus\\windows\\lib64\\libogg-0.dll"))
 		table.insert(client_depends, CopyToDirectory(".", "other\\opus\\windows\\lib64\\libopus-0.dll"))
diff --git a/other/opus/windows/lib64/libwinpthread-1.dll b/other/opus/windows/lib64/libwinpthread-1.dll
new file mode 100755
index 000000000..0b4a06aee
Binary files /dev/null and b/other/opus/windows/lib64/libwinpthread-1.dll differ
diff --git a/scripts/make_release.py b/scripts/make_release.py
index 98063bcfa..2eda42a2f 100644
--- a/scripts/make_release.py
+++ b/scripts/make_release.py
@@ -79,6 +79,7 @@ if include_data and not use_bundle:
 		    shutil.copy("libgcc_s_sjlj-1.dll", package_dir)
 		    shutil.copy("libidn-11.dll", package_dir)
 		elif platform == "win64":
+		    shutil.copy("libwinpthread-1.dll", package_dir)
 		    shutil.copy("libgcc_s_seh-1.dll", package_dir)
 		shutil.copy("libogg-0.dll", package_dir)
 		shutil.copy("libopus-0.dll", package_dir)