diff --git a/backend/go.mod b/backend/go.mod
index a845517d..729b3af9 100644
--- a/backend/go.mod
+++ b/backend/go.mod
@@ -2,4 +2,4 @@ module crawlab
 
 go 1.16
 
-require github.com/crawlab-team/crawlab-core v0.6.1-0.20220807014734-91a703d8f762
+require github.com/crawlab-team/crawlab-core v0.6.1-0.20220820024533-b8336f87f24d
diff --git a/backend/go.sum b/backend/go.sum
index 65ba045c..1eaec90c 100644
--- a/backend/go.sum
+++ b/backend/go.sum
@@ -130,12 +130,15 @@ github.com/crawlab-team/crawlab-core v0.6.1-0.20220718062618-6925d9af1673 h1:N9T
 github.com/crawlab-team/crawlab-core v0.6.1-0.20220718062618-6925d9af1673/go.mod h1:7kvjKE9gnduqvoRHZV7GXSlR1nM7iO/GJy50ERfW8k4=
 github.com/crawlab-team/crawlab-core v0.6.1-0.20220807014734-91a703d8f762 h1:YS1BmYDhLXrW3efTAvcNr1+a2LJmOBB9QAjQz/6AbOo=
 github.com/crawlab-team/crawlab-core v0.6.1-0.20220807014734-91a703d8f762/go.mod h1:Bah0/ekMg47cYwtleRBS6UUfIOZYN6+GXZLkyPqMN0E=
+github.com/crawlab-team/crawlab-core v0.6.1-0.20220820024533-b8336f87f24d h1:C2mwAnXCY93Osc+s8rtPsOSOjVRGmspUQmorUamYrAE=
+github.com/crawlab-team/crawlab-core v0.6.1-0.20220820024533-b8336f87f24d/go.mod h1:KtjBPYGOaVEzLL3Jtf0nNCrmhgndFhXi4Xj6eyU8ptA=
 github.com/crawlab-team/crawlab-db v0.0.2/go.mod h1:o7o4rbcyAWlFGHg9VS7V7tM/GqRq+N2mnAXO71cZA78=
 github.com/crawlab-team/crawlab-db v0.6.0-1 h1:Is3a3q1epc7mFP4iDIr9nXlcHSW5IL6jXKQ3YEsXpVo=
 github.com/crawlab-team/crawlab-db v0.6.0-1/go.mod h1:gfeF0nAnFuup6iYvgHkY0in/HpO/+JktXqVNMdhoxhU=
 github.com/crawlab-team/crawlab-fs v0.0.0/go.mod h1:k2VXprQspLAmbgO5sSpqMjg/xP4iKDkW4RyTWY8eTZM=
 github.com/crawlab-team/crawlab-fs v0.6.0-beta.20211101.1940 h1:KFZ39oe/QyhhRhXYZSmzDZl3L/JUEPkiiaf4+/iuboY=
 github.com/crawlab-team/crawlab-fs v0.6.0-beta.20211101.1940/go.mod h1:dA1G6xeiClbTMkjRuoagGrcKfQ97jJZRAhZUSwrKdoI=
+github.com/crawlab-team/crawlab-fs v0.6.0-beta.20211101.1940.0.20220818064917-625d96eea842/go.mod h1:dA1G6xeiClbTMkjRuoagGrcKfQ97jJZRAhZUSwrKdoI=
 github.com/crawlab-team/crawlab-grpc v0.6.0-beta.20211219.1930 h1:THQ+k+LgCO0Tyw0wDTnTekqnyGhJdsbg3IAhtyqdBlU=
 github.com/crawlab-team/crawlab-grpc v0.6.0-beta.20211219.1930/go.mod h1:YHWntJs8VVIgYqtrq/mMfYpO8DNhnEzizP0apw9NQ8Y=
 github.com/crawlab-team/crawlab-log v0.1.0 h1:0t+lZEojs3Vqb/bMkk2qs3I+1+XdwKG3pMTfeK5PZWM=
diff --git a/workspace/dockerfiles/golang/Dockerfile b/workspace/dockerfiles/golang/Dockerfile
index 59e3cbda..6db9477d 100644
--- a/workspace/dockerfiles/golang/Dockerfile
+++ b/workspace/dockerfiles/golang/Dockerfile
@@ -25,12 +25,14 @@ RUN apt-get install -y python3 python3-pip \
 # install golang
 RUN curl -OL https://storage.googleapis.com/golang/go1.16.7.linux-amd64.tar.gz \
 	&& tar -C /usr/local -xvf go1.16.7.linux-amd64.tar.gz \
-	&& ln -s /usr/local/go/bin/go /usr/local/bin/go
+	&& ln -s /usr/local/go/bin/go /usr/local/bin/go \
+	&& rm go1.16.7.linux-amd64.tar.gz
 
 # install seaweedfs
 RUN wget https://github.com/chrislusf/seaweedfs/releases/download/2.76/linux_amd64.tar.gz \
   && tar -zxf linux_amd64.tar.gz \
-  && cp weed /usr/local/bin
+  && cp weed /usr/local/bin \
+  && rm linux_amd64.tar.gz
 
 # install backend
 RUN pip install scrapy pymongo bs4 requests -i https://mirrors.aliyun.com/pypi/simple