diff --git a/net/seafile-ccnet/Makefile b/net/seafile-ccnet/Makefile
index bad2d50dc..3fd7e1cd4 100644
--- a/net/seafile-ccnet/Makefile
+++ b/net/seafile-ccnet/Makefile
@@ -9,14 +9,14 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=seafile-ccnet
 PKG_VERSION:=3.1.7
-PKG_RELEASE:=1
+PKG_RELEASE=$(PKG_SOURCE_VERSION)
 PKG_LICENSE:=GPL-3.0
 
-PKG_BUILD_DIR:=$(BUILD_DIR)/ccnet-$(PKG_VERSION)-server
-PKG_SOURCE:=v$(PKG_VERSION)-server.tar.gz
-PKG_SOURCE_URL:=https://github.com/haiwen/ccnet/archive/
-PKG_MD5SUM:=ed6d58bcce31d33847f536d129cfb404
-PKG_CAT:=zcat
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/haiwen/ccnet.git
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=ddf42784fab3b5924f65e648facd21c3bffa2c72
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 
@@ -51,16 +51,9 @@ CONFIGURE_ARGS += --disable-client \
 PKG_BUILD_DEPENDS:=vala/host \
 		   libsearpc/host
 
-Hooks/Prepare/Post += delete_source_package
-
 TARGET_LDFLAGS += -Wl,-rpath-link=$(STAGING_DIR)/usr/lib -liconv \
 		    -L$(STAGING_DIR)/usr/lib/mysql -lmysqlclient -lz
 
-define delete_source_package
-	# deleting downloaded source package as its filename is ambiguous
-	rm -f $(DL_DIR)/$(PKG_SOURCE)
-endef
-
 define Package/seafile-ccnet/install
 	$(INSTALL_DIR) $(1)/usr/{bin,lib}
 	$(INSTALL_DIR) $(1)/usr/lib/python2.7/site-packages
diff --git a/net/seafile-seahub/Makefile b/net/seafile-seahub/Makefile
index 6a0b8d971..30a1e9d5d 100644
--- a/net/seafile-seahub/Makefile
+++ b/net/seafile-seahub/Makefile
@@ -9,14 +9,14 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=seafile-seahub
 PKG_VERSION:=3.1.7
-PKG_RELEASE:=1
+PKG_RELEASE=$(PKG_SOURCE_VERSION)
 PKG_LICENSE:=Apache-2.0
 
-PKG_BUILD_DIR:=$(BUILD_DIR)/seahub-$(PKG_VERSION)-server
-PKG_SOURCE:=v$(PKG_VERSION)-server.tar.gz
-PKG_SOURCE_URL:=https://github.com/haiwen/seahub/archive/
-PKG_MD5SUM:=d019b7171ed23817025cba55554b90d9
-PKG_CAT:=zcat
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/haiwen/seahub.git
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=a984c86442e7fc10c3bcf6d92b4843f7263547eb
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -37,12 +37,6 @@ define Package/seafile-seahub/description
 endef
 
 PKG_BUILD_DEPENDS:=python-setuptools
-Hooks/Prepare/Post += delete_source_package
-
-define delete_source_package
-	# deleting downloaded source package as its filename is ambiguous
-	rm -f $(DL_DIR)/$(PKG_SOURCE)
-endef
 
 define Build/Configure
 endef
diff --git a/net/seafile-server/Makefile b/net/seafile-server/Makefile
index 2ec6de777..3b977bdc2 100644
--- a/net/seafile-server/Makefile
+++ b/net/seafile-server/Makefile
@@ -9,14 +9,14 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=seafile-server
 PKG_VERSION:=3.1.7
-PKG_RELEASE:=1
+PKG_RELEASE=$(PKG_SOURCE_VERSION)
 PKG_LICENSE:=GPL-3.0
 
-PKG_BUILD_DIR:=$(BUILD_DIR)/seafile-$(PKG_VERSION)-server
-PKG_SOURCE:=v$(PKG_VERSION)-server.tar.gz
-PKG_SOURCE_URL:=https://github.com/haiwen/seafile/archive/
-PKG_MD5SUM:=af35324998b6c98fe1442d5d775871ee
-PKG_CAT:=zcat
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/haiwen/seafile.git
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=69658fca88f258276be92447b1b4462b64a1c6b9
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 
@@ -53,13 +53,6 @@ PKG_BUILD_DEPENDS:=vala/host \
 TARGET_LDFLAGS += -Wl,-rpath-link=$(STAGING_DIR)/usr/lib -liconv \
 		    -L$(STAGING_DIR)/usr/lib/mysql -lmysqlclient -lz
 
-Hooks/Prepare/Post += delete_source_package
-
-define delete_source_package
-	# deleting downloaded source package as its filename is ambiguous
-	rm -f $(DL_DIR)/$(PKG_SOURCE)
-endef
-
 define Package/seafile-server/install
 	$(INSTALL_DIR) $(1)/usr/{bin,lib}
 	$(INSTALL_DIR) $(1)/usr/lib/python2.7/site-packages