diff --git a/build/docker/README.md b/build/docker/README.md
index a41f031..9635e6f 100644
--- a/build/docker/README.md
+++ b/build/docker/README.md
@@ -183,7 +183,7 @@
 | java      | 1.8.0\_191     | 17           |       |
 | js        | Node.js 6.17.1, V8 5.1.281.111, npm 3.10.10 | Node.js 10.18.0, V8 6.8.275.32, npm 6.13.4 |     |
 | lua       |               | 5.2.4         | Lua 5.3: see THRIFT-4386 |
-| netstd    | 6.0           | 6.0           |       |
+| netstd    | 7.0           | 7.0           |       |
 | nodejs    | 6.16.0        | 10.16.0       |       |
 | ocaml     |               | 4.05.0        | THRIFT-4517: ocaml 4.02.3 on xenial appears broken |
 | perl      | 5.22.1        | 5.26.1        |       |
diff --git a/build/docker/old/debian-stretch/Dockerfile b/build/docker/old/debian-stretch/Dockerfile
index 628b626..25237ca 100644
--- a/build/docker/old/debian-stretch/Dockerfile
+++ b/build/docker/old/debian-stretch/Dockerfile
@@ -102,10 +102,10 @@
 # project isn't ready for this quite yet:
 # RUN apt-get install -y --no-install-recommends \
 # `# dotnet core dependencies` \
-#       dotnet-sdk-6.0 \
-#       dotnet-runtime-6.0 \
-#       aspnetcore-runtime-6.0 \
-#       dotnet-apphost-pack-6.0
+#       dotnet-sdk-7.0 \
+#       dotnet-runtime-7.0 \
+#       aspnetcore-runtime-7.0 \
+#       dotnet-apphost-pack-7.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/old/ubuntu-artful/Dockerfile b/build/docker/old/ubuntu-artful/Dockerfile
index 8068265..0391470 100644
--- a/build/docker/old/ubuntu-artful/Dockerfile
+++ b/build/docker/old/ubuntu-artful/Dockerfile
@@ -120,10 +120,10 @@
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-6.0 \
-      dotnet-runtime-6.0 \
-      aspnetcore-runtime-6.0 \
-      dotnet-apphost-pack-6.0
+      dotnet-sdk-7.0 \
+      dotnet-runtime-7.0 \
+      aspnetcore-runtime-7.0 \
+      dotnet-apphost-pack-7.0
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/old/ubuntu-disco/Dockerfile b/build/docker/old/ubuntu-disco/Dockerfile
index 2e802e5..37377e3 100644
--- a/build/docker/old/ubuntu-disco/Dockerfile
+++ b/build/docker/old/ubuntu-disco/Dockerfile
@@ -126,10 +126,10 @@
 
 RUN apt-get install -y --no-install-recommends \
       `# dotnet core dependencies` \
-      dotnet-sdk-6.0 \
-      dotnet-runtime-6.0 \
-      aspnetcore-runtime-6.0 \
-      dotnet-apphost-pack-6.0
+      dotnet-sdk-7.0 \
+      dotnet-runtime-7.0 \
+      aspnetcore-runtime-7.0 \
+      dotnet-apphost-pack-7.0
 
 RUN apt-get install -y --no-install-recommends \
       `# Erlang dependencies` \
diff --git a/build/docker/old/ubuntu-xenial/Dockerfile b/build/docker/old/ubuntu-xenial/Dockerfile
index 7cb58e8..add524d 100644
--- a/build/docker/old/ubuntu-xenial/Dockerfile
+++ b/build/docker/old/ubuntu-xenial/Dockerfile
@@ -115,10 +115,10 @@
 
 RUN apt-get install -y --no-install-recommends \
       `# dotnet core dependencies` \
-      dotnet-sdk-6.0 \
-      dotnet-runtime-6.0 \
-      aspnetcore-runtime-6.0 \
-      dotnet-apphost-pack-6.0
+      dotnet-sdk-7.0 \
+      dotnet-runtime-7.0 \
+      aspnetcore-runtime-7.0 \
+      dotnet-apphost-pack-7.0
 
 # Erlang dependencies
 ARG ERLANG_OTP_VERSION=18.3.4.11
diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index 873dad8..f0dcb90 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -124,10 +124,10 @@
 
 RUN apt-get install -y --no-install-recommends \
       `# dotnet core dependencies` \
-      dotnet-sdk-6.0 \
-      dotnet-runtime-6.0 \
-      aspnetcore-runtime-6.0 \
-      dotnet-apphost-pack-6.0
+      dotnet-sdk-7.0 \
+      dotnet-runtime-7.0 \
+      aspnetcore-runtime-7.0 \
+      dotnet-apphost-pack-7.0
 
 # Erlang dependencies
 ARG ERLANG_OTP_VERSION=23.3.4.11
diff --git a/build/docker/ubuntu-focal/Dockerfile b/build/docker/ubuntu-focal/Dockerfile
index 0a8c1c7..ad01f7e 100644
--- a/build/docker/ubuntu-focal/Dockerfile
+++ b/build/docker/ubuntu-focal/Dockerfile
@@ -125,10 +125,10 @@
 
 RUN apt-get install -y --no-install-recommends \
       `# dotnet core dependencies` \
-      dotnet-sdk-6.0 \
-      dotnet-runtime-6.0 \
-      aspnetcore-runtime-6.0 \
-      dotnet-apphost-pack-6.0
+      dotnet-sdk-7.0 \
+      dotnet-runtime-7.0 \
+      aspnetcore-runtime-7.0 \
+      dotnet-apphost-pack-7.0
 
 # Erlang dependencies
 ARG ERLANG_OTP_VERSION=23.3.4.11
diff --git a/build/docker/ubuntu-jammy/Dockerfile b/build/docker/ubuntu-jammy/Dockerfile
index 7d56cc5..d2a5f64 100644
--- a/build/docker/ubuntu-jammy/Dockerfile
+++ b/build/docker/ubuntu-jammy/Dockerfile
@@ -125,10 +125,10 @@
 
 RUN apt-get install -y --no-install-recommends \
   `# dotnet core dependencies` \
-  dotnet-sdk-6.0 \
-  dotnet-runtime-6.0 \
-  aspnetcore-runtime-6.0 \
-  dotnet-apphost-pack-6.0
+  dotnet-sdk-7.0 \
+  dotnet-runtime-7.0 \
+  aspnetcore-runtime-7.0 \
+  dotnet-apphost-pack-7.0
 
 # Erlang dependencies
 ARG ERLANG_OTP_VERSION=23.3.4.11