diff --git a/.drone.yml b/.drone.yml
index 260ffece50..e6ec2b5733 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -35,7 +35,7 @@ pipeline:
     commands:
       - make test-mysql
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
 
   test-pgsql:
     image: webhippie/golang:edge
@@ -47,7 +47,7 @@ pipeline:
     commands:
       - make test-pgsql
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
 
   updater:
     image: karalabe/xgo-latest:latest
@@ -59,8 +59,7 @@ pipeline:
     commands:
       - make release
     when:
-      event: [ push, tag ]
-      branch: [ master, release/*, refs/tags/* ]
+      event: [ push, tag, pull_request ]
 
   coverage:
     image: plugins/coverage
@@ -140,11 +139,11 @@ services:
       - MYSQL_DATABASE=test
       - MYSQL_ALLOW_EMPTY_PASSWORD=yes
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
 
   pgsql:
     image: postgres:9.5
     environment:
       - POSTGRES_DB=test
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
diff --git a/.drone.yml.sig b/.drone.yml.sig
index 030b069dbb..a28dfff453 100644
--- a/.drone.yml.sig
+++ b/.drone.yml.sig
@@ -1 +1 @@
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\ No newline at end of file
+eyJhbGciOiJIUzI1NiJ9.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.C0W227LgnxWaDuq9yH6bb6OocHaQD7jQe8CaClmZzNw
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 33b187764e..f81989acc5 100644
--- a/Makefile
+++ b/Makefile
@@ -108,7 +108,7 @@ release-build:
 	@which xgo > /dev/null; if [ $$? -ne 0 ]; then \
 		go get -u github.com/karalabe/xgo; \
 	fi
-	xgo -dest $(DIST)/binaries -tags '$(TAGS)' -ldflags '-s -w $(LDFLAGS)' -targets '$(TARGETS)' -out $(EXECUTABLE)-$(VERSION) $(IMPORT)
+	xgo -dest $(DIST)/binaries -tags '$(TAGS)' -ldflags '-s -w $(LDFLAGS)' -targets '$(TARGETS)' -out $(EXECUTABLE)-$(VERSION) .
 ifeq ($(CI),drone)
 	mv /build/* $(DIST)/binaries
 endif
diff --git a/vendor/github.com/boltdb/bolt/bolt_mips64.go b/vendor/github.com/boltdb/bolt/bolt_mips64.go
new file mode 100644
index 0000000000..c1dfbac577
--- /dev/null
+++ b/vendor/github.com/boltdb/bolt/bolt_mips64.go
@@ -0,0 +1,8 @@
+// +build mips64
+package bolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0xFFFFFFFFFFFF // 256TB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0x7FFFFFFF
diff --git a/vendor/github.com/boltdb/bolt/bolt_mips64le.go b/vendor/github.com/boltdb/bolt/bolt_mips64le.go
new file mode 100644
index 0000000000..45be6947a0
--- /dev/null
+++ b/vendor/github.com/boltdb/bolt/bolt_mips64le.go
@@ -0,0 +1,8 @@
+// +build mips64le
+package bolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0xFFFFFFFFFFFF // 256TB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0x7FFFFFFF