diff --git a/Dockerfile b/Dockerfile
index 992c52433c..44161bac51 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -146,7 +146,7 @@ RUN git init . && git remote add origin "https://github.com/go-delve/delve.git"
 # from the https://github.com/go-delve/delve repository.
 # It can be used to run Docker with a possibility of
 # attaching debugger to it.
-ARG DELVE_VERSION=v1.20.1
+ARG DELVE_VERSION=v1.21.1
 RUN git fetch -q --depth 1 origin "${DELVE_VERSION}" +refs/tags/*:refs/tags/* && git checkout -q FETCH_HEAD
 
 FROM base AS delve-build