diff --git a/developer-guides/OPEA_API.rst b/developer-guides/OPEA_API.rst
index 881d1a60..37f67a30 100644
--- a/developer-guides/OPEA_API.rst
+++ b/developer-guides/OPEA_API.rst
@@ -1,6 +1,6 @@
 .. _OPEA_API:
 
-OPEA API Service Spec (v0.9)
+OPEA API Service Spec (v1.0)
 ############################
 
 Authors:
diff --git a/developer-guides/OPEA_API_Specification.docx b/developer-guides/OPEA_API_Specification.docx
new file mode 100644
index 00000000..82761a23
Binary files /dev/null and b/developer-guides/OPEA_API_Specification.docx differ
diff --git a/developer-guides/OPEA_API_Specification_v0.9.docx b/developer-guides/OPEA_API_Specification_v0.9.docx
deleted file mode 100644
index 36ea849d..00000000
Binary files a/developer-guides/OPEA_API_Specification_v0.9.docx and /dev/null differ