diff --git a/Program/zlib1.dll b/Program/zlib1.dll
new file mode 100644
index 0000000000..bd0baedf67
Binary files /dev/null and b/Program/zlib1.dll differ
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 9ceabf7e1d..ca9e37a57f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -161,6 +161,7 @@ list(APPEND SM_WINDOWS_PROGRAM_DLLS
   "${SM_PROGRAM_DIR}/libuv.dll"
   "${SM_PROGRAM_DIR}/SSLEAY32.dll"
   "${SM_PROGRAM_DIR}/LIBEAY32.dll"
+  "${SM_PROGRAM_DIR}/zlib1.dll"
 )
 
 if(WIN32)
@@ -652,6 +653,7 @@ if(NOT APPLE)
     install(FILES "${SM_PROGRAM_DIR}/LIBEAY32.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
     install(FILES "${SM_PROGRAM_DIR}/libuv.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
     install(FILES "${SM_PROGRAM_DIR}/SSLEAY32.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
+    install(FILES "${SM_PROGRAM_DIR}/zlib1.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
 
     # foreach(SM_WINDOW_DLL "${SM_WINDOWS_PROGRAM_DLLS}")
     #   install(FILES "${SM_WINDOW_DLL}" DESTINATION "${SM_INSTALL_DESTINATION}")
diff --git a/stepmania.nsi b/stepmania.nsi
index e66c5752f4..436ba8bf90 100644
--- a/stepmania.nsi
+++ b/stepmania.nsi
@@ -492,6 +492,7 @@ Section "Main Section" SecMain
 	File "Program\SSLEAY32.dll"
 	File "Program\LIBEAY32.dll"
 	File "Program\libuv.dll"
+	File "Program\zlib1.dll"
 	; parallel lights
 	File "Program\parallel_lights_io.dll"
 	; others