diff --git a/.github/workflows/tarball.yml b/.github/workflows/tarball.yml
index cc71eec..4b176e9 100644
--- a/.github/workflows/tarball.yml
+++ b/.github/workflows/tarball.yml
@@ -24,9 +24,9 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.17"
           - "1.18"
           - "1.19"
+          - "1.20"
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
@@ -71,9 +71,9 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.17"
           - "1.18"
           - "1.19"
+          - "1.20"
     runs-on: ubuntu-latest
     needs: [create]
     steps:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d6d35af..9dc8b0d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,9 +26,9 @@ jobs:
     strategy:
       matrix:
         go-version:
-          - "1.17"
           - "1.18"
           - "1.19"
+          - "1.20"
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
diff --git a/README.md b/README.md
index 958650a..30919fd 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ information on the API of the signaling server.
 The following tools are required for building the signaling server.
 
 - git
-- go >= 1.17
+- go >= 1.18 (usually the last three versions of go are supported)
 - make
 - protobuf-compiler >= 3
 
diff --git a/docker/proxy/Dockerfile b/docker/proxy/Dockerfile
index 89e934c..d043411 100644
--- a/docker/proxy/Dockerfile
+++ b/docker/proxy/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=${BUILDPLATFORM} golang:1.19 AS builder
+FROM --platform=${BUILDPLATFORM} golang:1.20 AS builder
 ARG TARGETARCH
 ARG TARGETOS
 
diff --git a/docker/server/Dockerfile b/docker/server/Dockerfile
index 180e334..be36ca7 100644
--- a/docker/server/Dockerfile
+++ b/docker/server/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=${BUILDPLATFORM} golang:1.19 AS builder
+FROM --platform=${BUILDPLATFORM} golang:1.20 AS builder
 
 WORKDIR /workdir