diff --git a/build.py b/build.py
index 976c053..ef1cc1c 100644
--- a/build.py
+++ b/build.py
@@ -45,7 +45,8 @@ parser.add_argument("-v", "--verbose", help="Verbose mode", default=False, actio
 parser.add_argument("-I", "--ida-install", required=True, help="IDA's installation directory", type=str)
 args = parser.parse_args()
 
-_probe = os.path.join("..", "..", "include", "pro.h")
+sdk_relpath = os.path.join("..", "..")
+_probe = os.path.join(sdk_relpath, "include", "pro.h")
 assert os.path.exists(_probe), "Could not find IDA SDK include path (looked for: \"%s\")" % _probe
 
 
@@ -77,6 +78,7 @@ def main():
     if args.verbose:
         argv.append("-d")
     env["IDA_INSTALL"] = args.ida_install.replace('\\', '/')
+    env["SDK_BIN_PATH"] = os.path.abspath(os.path.join(sdk_relpath, "bin")).replace('\\', '/')
     for ea64 in [True, False]:
         if ea64:
             env["__EA64__"] = "1"
diff --git a/idapython.cpp b/idapython.cpp
index 5ef96b2..9df6524 100644
--- a/idapython.cpp
+++ b/idapython.cpp
@@ -986,6 +986,10 @@ bool idapython_plugin_t::init()
   msg("HexraysPython: Python compiled with DEBUG enabled.\n");
 #endif
 
+  qstring dynload_base;
+  if ( !qgetenv("IDAPYTHON_DYNLOAD_BASE", &dynload_base) )
+    dynload_base = idadir(nullptr);
+
   // Set IDAPYTHON_VERSION in Python
   qstring init_code;
   init_code.sprnt(
@@ -997,7 +1001,7 @@ bool idapython_plugin_t::init()
           "IDAPYTHON_IDAUSR_SYSPATH = %s\n",
           VER_MAJOR, VER_MINOR, VER_PATCH, VER_STATUS, VER_SERIAL,
           config.remove_cwd_sys_path ? "True" : "False",
-          idadir(nullptr),
+          dynload_base.c_str(),
           sizeof(ea_t)*8,
           config.autoimport_compat_idaapi ? "True" : "False",
           config.idausr_syspath ? "True" : "False"
diff --git a/makefile b/makefile
index 40cbb98..6582073 100644
--- a/makefile
+++ b/makefile
@@ -187,7 +187,11 @@ else
   IDAT_PATH?=$(IDA_INSTALL)/idat
 endif
 
-IDAT_CMD=TVHEADLESS=1 $(IDAT_PATH)$(SUFF64)
+ifeq ($(OUT_OF_TREE_BUILD),)
+  IDAT_CMD=TVHEADLESS=1 $(IDAT_PATH)$(SUFF64)
+else
+  IDAT_CMD=TVHEADLESS=1 IDAPYTHON_DYNLOAD_BASE=$(SDK_BIN_PATH) $(IDAT_PATH)$(SUFF64)
+endif
 
 # envvar HAS_HEXRAYS must have been set by build.py if needed
 ifeq ($(OUT_OF_TREE_BUILD),)
diff --git a/out_of_tree/parsed_notifications.zip b/out_of_tree/parsed_notifications.zip
index 8dba7e0..e7c9f00 100644
Binary files a/out_of_tree/parsed_notifications.zip and b/out_of_tree/parsed_notifications.zip differ