diff --git a/package_opentracker_index.json b/package_opentracker_index.json
index d708304..f46d6a0 100644
--- a/package_opentracker_index.json
+++ b/package_opentracker_index.json
@@ -14,10 +14,10 @@
           "architecture": "sam",
           "version": "1.0.5",
           "category": "Contributed",
-          "url": "https://github.com/geolink/opentracker-arduino-board/releases/download/v1.0.4/sam-1.6.6-opentracker-1.0.4.tar.bz2",
-          "archiveFileName": "sam-1.6.6-opentracker-1.0.4.tar.bz2",
-          "checksum": "SHA-256:675f4a0ef567f186bc8fee2b2e76e3670fe68ca176edbd7d2d66c927e4c0572f",
-          "size": "2863733",
+          "url": "https://github.com/geolink/opentracker-arduino-board/releases/download/v1.0.5/sam-1.6.11-opentracker-1.0.5.tar.bz2",
+          "archiveFileName": "sam-1.6.11-opentracker-1.0.5.tar.bz2",
+          "checksum": "SHA-256:50c01d87122a7f6416c3494b1ca96e05d5b4483ea21bb6dfb57184c0ce7c68e8",
+          "size": "2982552",
           "boards": [
             {"name": "GeoLink OpenTracker"}
           ],
diff --git a/sam/1.0.5/readme.txt b/sam/1.0.5/readme.txt
index e0abe2e..9a1fe53 100644
--- a/sam/1.0.5/readme.txt
+++ b/sam/1.0.5/readme.txt
@@ -1 +1 @@
-Based on Arduino SAM Core and platform v1.6.6
+Based on Arduino SAM Core and platform v1.6.11
diff --git a/sam/1.0.5/variants/geolink_opentracker/libsam_sam3a4c_gcc_rel.a b/sam/1.0.5/variants/geolink_opentracker/libsam_sam3a4c_gcc_rel.a
index 9c576e7..dd1a5fb 100644
Binary files a/sam/1.0.5/variants/geolink_opentracker/libsam_sam3a4c_gcc_rel.a and b/sam/1.0.5/variants/geolink_opentracker/libsam_sam3a4c_gcc_rel.a differ