diff --git a/CMakeLists.txt b/CMakeLists.txt
index 42bee0428..bc02c21b8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ option(PYZMQ_LIBZMQ_RPATH "Add $ZMQ_PREFIX/lib to $RPATH (true by default). Set
 # anything new should start with PYZMQ_
 option(PYZMQ_LIBZMQ_NO_BUNDLE "Prohibit building bundled libzmq. Useful for repackaging, to allow default search for libzmq and requiring it to succeed." OFF)
 set(PYZMQ_LIBZMQ_VERSION "4.3.5" CACHE STRING "libzmq version when bundling")
-set(PYZMQ_LIBSODIUM_VERSION "1.0.19" CACHE STRING "libsodium version when bundling")
+set(PYZMQ_LIBSODIUM_VERSION "1.0.20" CACHE STRING "libsodium version when bundling")
 set(PYZMQ_LIBZMQ_URL "" CACHE STRING "full URL to download bundled libzmq")
 set(PYZMQ_LIBSODIUM_URL "" CACHE STRING "full URL to download bundled libsodium")
 set(PYZMQ_LIBSODIUM_CONFIGURE_ARGS "" CACHE STRING "semicolon-separated list of arguments to pass to ./configure for bundled libsodium")
diff --git a/buildutils/bundle.py b/buildutils/bundle.py
index cfafe221e..ac9ae112d 100644
--- a/buildutils/bundle.py
+++ b/buildutils/bundle.py
@@ -12,7 +12,7 @@
 repo_root = buildutils.parent.resolve()
 licenses = repo_root / "licenses"
 
-bundled_libsodium_version = "1.0.19"
+bundled_libsodium_version = "1.0.20"
 bundled_version = "4.3.5"
 
 
@@ -28,7 +28,7 @@ def report_version(library="libzmq"):
 def fetch_licenses():
     """Download license files for bundled dependencies"""
     licenses.mkdir(exist_ok=True)
-    libsodium_license_url = f"https://raw.githubusercontent.com/jedisct1/libsodium/{bundled_libsodium_version}/LICENSE"
+    libsodium_license_url = f"https://raw.githubusercontent.com/jedisct1/libsodium/{bundled_libsodium_version}-RELEASE/LICENSE"
     libzmq_license_url = (
         f"https://raw.githubusercontent.com/zeromq/libzmq/v{bundled_version}/LICENSE"
     )
diff --git a/docs/source/howto/build.md b/docs/source/howto/build.md
index 8a13c099d..91927ec64 100644
--- a/docs/source/howto/build.md
+++ b/docs/source/howto/build.md
@@ -172,14 +172,14 @@ You can specify which version of libsodium/libzmq to bundle with:
 
 ```
 -DPYZMQ_LIBZMQ_VERSION=4.3.5
--DPYZMQ_LIBSODIUM_VERSION=1.0.19
+-DPYZMQ_LIBSODIUM_VERSION=1.0.20
 ```
 
 or the specify the full URL to download (e.g. to test bundling an unreleased version):
 
 ```
 -DPYZMQ_LIBZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.5/zeromq-4.3.5.tar.gz"
--DPYZMQ_LIBSODIUM_URL="https://download.libsodium.org/libsodium/releases/libsodium-1.0.19.tar.gz"
+-DPYZMQ_LIBSODIUM_URL="https://download.libsodium.org/libsodium/releases/libsodium-1.0.20.tar.gz"
 ```
 
 ```{warning}
@@ -246,7 +246,7 @@ PYZMQ_LIBSODIUM_MSBUILD_ARGS:STRING=
 PYZMQ_LIBSODIUM_URL:STRING=
 
 # libsodium version when bundling
-PYZMQ_LIBSODIUM_VERSION:STRING=1.0.19
+PYZMQ_LIBSODIUM_VERSION:STRING=1.0.20
 
 # Visual studio solution version for bundled libsodium (default: detect from MSVC_VERSION)
 PYZMQ_LIBSODIUM_VS_VERSION:STRING=
diff --git a/docs/source/howto/cross-android.Dockerfile b/docs/source/howto/cross-android.Dockerfile
index 7584d2969..80f0158c6 100644
--- a/docs/source/howto/cross-android.Dockerfile
+++ b/docs/source/howto/cross-android.Dockerfile
@@ -54,7 +54,7 @@ RUN make install
 
 # (optional) cross-compile libsodium, libzmq
 WORKDIR /src
-ENV LIBSODIUM_VERSION=1.0.19
+ENV LIBSODIUM_VERSION=1.0.20
 RUN curl -L -O "https://download.libsodium.org/libsodium/releases/libsodium-${LIBSODIUM_VERSION}.tar.gz" \
  && tar -xzf libsodium-${LIBSODIUM_VERSION}.tar.gz \
  && mv libsodium-stable libsodium \
diff --git a/docs/source/howto/cross.Dockerfile b/docs/source/howto/cross.Dockerfile
index 90dc16368..9094453b6 100644
--- a/docs/source/howto/cross.Dockerfile
+++ b/docs/source/howto/cross.Dockerfile
@@ -52,7 +52,7 @@ WORKDIR /src
 
 # # (optional) cross-compile libsodium, libzmq
 # WORKDIR /src
-# ENV LIBSODIUM_VERSION=1.0.19
+# ENV LIBSODIUM_VERSION=1.0.20
 # RUN curl -L -O "https://download.libsodium.org/libsodium/releases/libsodium-${LIBSODIUM_VERSION}.tar.gz" \
 #  && tar -xzf libsodium-${LIBSODIUM_VERSION}.tar.gz \
 #  && mv libsodium-stable libsodium \