diff --git a/cmd/drone-agent/agent.go b/cmd/drone-agent/agent.go
index 2bd3ea203..46b311d72 100644
--- a/cmd/drone-agent/agent.go
+++ b/cmd/drone-agent/agent.go
@@ -18,7 +18,6 @@ import (
 	"context"
 	"crypto/tls"
 	"encoding/json"
-	grpccredentials "google.golang.org/grpc/credentials"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -27,6 +26,8 @@ import (
 	"sync"
 	"time"
 
+	grpccredentials "google.golang.org/grpc/credentials"
+
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/metadata"
@@ -37,7 +38,6 @@ import (
 	"github.com/woodpecker-ci/woodpecker/cncd/pipeline/pipeline/multipart"
 	"github.com/woodpecker-ci/woodpecker/cncd/pipeline/pipeline/rpc"
 
-	"github.com/drone/signal"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"github.com/tevino/abool"
@@ -116,7 +116,7 @@ func loop(c *cli.Context) error {
 		context.Background(),
 		metadata.Pairs("hostname", hostname),
 	)
-	ctx = signal.WithContextFunc(ctx, func() {
+	ctx = WithContextFunc(ctx, func() {
 		println("ctrl+c received, terminating process")
 		sigterm.Set()
 	})
diff --git a/cmd/drone-agent/signal.go b/cmd/drone-agent/signal.go
new file mode 100644
index 000000000..f3362a9a4
--- /dev/null
+++ b/cmd/drone-agent/signal.go
@@ -0,0 +1,42 @@
+// Copyright 2017 Drone.IO Inc.
+//
+// This file is licensed under the terms of the MIT license.
+// For a copy, see https://opensource.org/licenses/MIT.
+
+package main
+
+import (
+	"context"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+// WithContext returns a copy of parent context whose Done channel is closed
+// when an os interrupt signal is received.
+func WithContext(ctx context.Context) context.Context {
+	return WithContextFunc(ctx, func() {
+		println("interrupt received, terminating process")
+	})
+}
+
+// WithContextFunc returns a copy of parent context that is cancelled when
+// an os interrupt signal is received. The callback function f is invoked
+// before cancellation.
+func WithContextFunc(ctx context.Context, f func()) context.Context {
+	ctx, cancel := context.WithCancel(ctx)
+	go func() {
+		c := make(chan os.Signal)
+		signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
+		defer signal.Stop(c)
+
+		select {
+		case <-ctx.Done():
+		case <-c:
+			f()
+			cancel()
+		}
+	}()
+
+	return ctx
+}
diff --git a/go.mod b/go.mod
index 71b9ea0d5..740957b16 100644
--- a/go.mod
+++ b/go.mod
@@ -7,8 +7,6 @@ require (
 	docker.io/go-docker v1.0.0
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
 	github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5 // indirect
-	github.com/bmatcuk/doublestar v1.3.4 // indirect
-	github.com/bradrydzewski/togo v0.0.0-20180401185031-50a0e4726e74 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
 	github.com/dgrijalva/jwt-go v0.0.0-20150904212456-c1da56349675
 	github.com/dimfeld/httptreemux v5.0.1+incompatible
@@ -19,9 +17,7 @@ require (
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/docker/libcompose v0.4.0
-	github.com/drone/envsubst v1.0.2
-	github.com/drone/expr v0.0.0-20170909060652-c0e474cb2b07
-	github.com/drone/signal v1.0.0
+	github.com/drone/envsubst v1.0.3
 	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
 	github.com/franela/goblin v0.0.0-20200512143142-b260c999b2d7
 	github.com/ghodss/yaml v1.0.0
@@ -37,7 +33,7 @@ require (
 	github.com/gorilla/websocket v1.4.2
 	github.com/jackspirou/syscerts v0.0.0-20160531025014-b68f5469dff1
 	github.com/joho/godotenv v1.3.0
-	github.com/kr/pretty v0.2.0
+	github.com/kr/pretty v0.2.1
 	github.com/kr/text v0.2.0 // indirect
 	github.com/lib/pq v1.5.2
 	github.com/mattn/go-sqlite3 v2.0.3+incompatible
@@ -57,8 +53,7 @@ require (
 	github.com/stretchr/testify v1.5.1
 	github.com/tevino/abool v0.0.0-20170917061928-9b9efcf221b5
 	github.com/urfave/cli v1.22.4
-	github.com/vektra/mockery v1.1.2 // indirect
-	github.com/woodpecker-ci/togo v0.0.0-20180401185031-50a0e4726e74 // indirect
+	github.com/woodpecker-ci/expr v0.0.0-20210628233344-164b8b3d0915
 	golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37
 	golang.org/x/net v0.0.0-20210614182718-04defd469f4e
 	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
diff --git a/go.sum b/go.sum
index 29379ecc8..a04166a0a 100644
--- a/go.sum
+++ b/go.sum
@@ -17,10 +17,6 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/bmatcuk/doublestar v1.3.4 h1:gPypJ5xD31uhX6Tf54sDPUOBXTqKH4c9aPY66CyQrS0=
-github.com/bmatcuk/doublestar v1.3.4/go.mod h1:wiQtGV+rzVYxB7WIlirSN++5HPtPlXEo9MEoZQC/PmE=
-github.com/bradrydzewski/togo v0.0.0-20180401185031-50a0e4726e74 h1:fE72rAOk9gpizJL3mNv+Ez+3yt/GCoZWtkKEPLTZvvM=
-github.com/bradrydzewski/togo v0.0.0-20180401185031-50a0e4726e74/go.mod h1:+zgWTTgi3saXD5N9SSA+LYteMbFoIJKJ9WEPXoV0jQA=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -52,12 +48,8 @@ github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw
 github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/docker/libcompose v0.4.0 h1:zK7Ug0lCxPB8FDFNdCvR2ZjJjeJZ/607lfAYkp1hrtc=
 github.com/docker/libcompose v0.4.0/go.mod h1:EyqDS+Iyca0hS44T7qIMTeO1EOYWWWNOGpufHu9R8cs=
-github.com/drone/envsubst v1.0.2 h1:dpYLMAspQHW0a8dZpLRKe9jCNvIGZPhCPrycZzIHdqo=
-github.com/drone/envsubst v1.0.2/go.mod h1:bkZbnc/2vh1M12Ecn7EYScpI4YGYU0etwLJICOWi8Z0=
-github.com/drone/expr v0.0.0-20170909060652-c0e474cb2b07 h1:MulatomO8V30vVuzzUq6pDHImYZy5mjt0CrQwFB0Mlk=
-github.com/drone/expr v0.0.0-20170909060652-c0e474cb2b07/go.mod h1:ZTxWkAdswyXO7O1COlFOIg1VODCrbvhJIHO42DABVJU=
-github.com/drone/signal v1.0.0 h1:NrnM2M/4yAuU/tXs6RP1a1ZfxnaHwYkd0kJurA1p6uI=
-github.com/drone/signal v1.0.0/go.mod h1:S8t92eFT0g4WUgEc/LxG+LCuiskpMNsG0ajAMGnyZpc=
+github.com/drone/envsubst v1.0.3 h1:PCIBwNDYjs50AsLZPYdfhSATKaRg/FJmDc2D6+C2x8g=
+github.com/drone/envsubst v1.0.3/go.mod h1:N2jZmlMufstn1KEqvbHjw40h1KyTmnVzHcSc9bFiJ2g=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -142,8 +134,8 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJ
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pretty v0.2.0 h1:s5hAObm+yFO5uHYt5dYjxi2rXrsnmRpJx4OYvIWUaQs=
-github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -231,23 +223,17 @@ github.com/ugorji/go/codec v1.1.7 h1:2SvQaVZ1ouYrrKKwoSk2pzd4A9evlKJb9oTL+OaLUSs
 github.com/ugorji/go/codec v1.1.7/go.mod h1:Ax+UKWsSmolVDwsd+7N3ZtXu+yMGCf907BLYF3GoBXY=
 github.com/urfave/cli v1.22.4 h1:u7tSpNPPswAFymm8IehJhy4uJMlUuU/GmqSkvJ1InXA=
 github.com/urfave/cli v1.22.4/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
-github.com/vektra/mockery v1.1.2 h1:uc0Yn67rJpjt8U/mAZimdCKn9AeA97BOkjpmtBSlfP4=
-github.com/vektra/mockery v1.1.2/go.mod h1:VcfZjKaFOPO+MpN4ZvwPjs4c48lkq1o3Ym8yHZJu0jU=
-github.com/woodpecker-ci/togo v0.0.0-20180401185031-50a0e4726e74 h1:q/tWgA3hMWrAQqsS4yfhc0+w4RevBGr9ghem/bFFDRY=
-github.com/woodpecker-ci/togo v0.0.0-20180401185031-50a0e4726e74/go.mod h1:lykh/ei/caPO6sv4NN+pqnDTo8kEKhZcnhafN8GhGNs=
-github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/woodpecker-ci/expr v0.0.0-20210628233344-164b8b3d0915 h1:9zBOoKSR9CBeYoKQv6LFIuImg8lorCjh8XzK72bJMRg=
+github.com/woodpecker-ci/expr v0.0.0-20210628233344-164b8b3d0915/go.mod h1:PbzlZ93HrA1cf16OUP1vckAPq57gtF+ccnwZeDkmC9s=
 github.com/zenazn/goji v0.9.0/go.mod h1:7S9M489iMyHBNxwZnk9/EHS098H4/F6TATF2mIxtB1Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37 h1:cg5LA/zNPRzIXIWSCxQW10Rvpy94aQh3LT/ShoCpkHw=
 golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/mod v0.2.0 h1:KU7oHjnv3XNWfa5COkzUifxZmxp1TyI7ImMXqFxLwvQ=
-golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -258,7 +244,6 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -296,11 +281,7 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20200323144430-8dcfad9e016e h1:ssd5ulOvVWlh4kDSUF2SqzmMeWfjmwDXM+uGw/aQjRE=
-golang.org/x/tools v0.0.0-20200323144430-8dcfad9e016e/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
diff --git a/server/rpc.go b/server/rpc.go
index bf3498b1f..42b4b22cc 100644
--- a/server/rpc.go
+++ b/server/rpc.go
@@ -43,7 +43,7 @@ import (
 	"github.com/woodpecker-ci/woodpecker/remote"
 	"github.com/woodpecker-ci/woodpecker/store"
 
-	"github.com/drone/expr"
+	"github.com/woodpecker-ci/expr"
 )
 
 var Config = struct {