diff --git a/3.13-rc/alpine3.18/Dockerfile b/3.13-rc/alpine3.18/Dockerfile
index ed5311a6c..e1127d509 100644
--- a/3.13-rc/alpine3.18/Dockerfile
+++ b/3.13-rc/alpine3.18/Dockerfile
@@ -17,7 +17,7 @@ RUN set -eux; \
 	;
 
 ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN set -eux; \
 	\
diff --git a/3.13-rc/alpine3.19/Dockerfile b/3.13-rc/alpine3.19/Dockerfile
index 7a373dbf9..3ba606631 100644
--- a/3.13-rc/alpine3.19/Dockerfile
+++ b/3.13-rc/alpine3.19/Dockerfile
@@ -17,7 +17,7 @@ RUN set -eux; \
 	;
 
 ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN set -eux; \
 	\
diff --git a/3.13-rc/bookworm/Dockerfile b/3.13-rc/bookworm/Dockerfile
index d2ba87940..a233320b0 100644
--- a/3.13-rc/bookworm/Dockerfile
+++ b/3.13-rc/bookworm/Dockerfile
@@ -20,7 +20,7 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN set -eux; \
 	\
diff --git a/3.13-rc/bullseye/Dockerfile b/3.13-rc/bullseye/Dockerfile
index 206f4fc28..35b1d43e1 100644
--- a/3.13-rc/bullseye/Dockerfile
+++ b/3.13-rc/bullseye/Dockerfile
@@ -20,7 +20,7 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN set -eux; \
 	\
diff --git a/3.13-rc/slim-bookworm/Dockerfile b/3.13-rc/slim-bookworm/Dockerfile
index b2846550d..503ad80fe 100644
--- a/3.13-rc/slim-bookworm/Dockerfile
+++ b/3.13-rc/slim-bookworm/Dockerfile
@@ -20,7 +20,7 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN set -eux; \
 	\
diff --git a/3.13-rc/slim-bullseye/Dockerfile b/3.13-rc/slim-bullseye/Dockerfile
index 685af99a0..668c7373d 100644
--- a/3.13-rc/slim-bullseye/Dockerfile
+++ b/3.13-rc/slim-bullseye/Dockerfile
@@ -20,7 +20,7 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN set -eux; \
 	\
diff --git a/3.13-rc/windows/windowsservercore-1809/Dockerfile b/3.13-rc/windows/windowsservercore-1809/Dockerfile
index 08a9ea32d..d4016ccb9 100644
--- a/3.13-rc/windows/windowsservercore-1809/Dockerfile
+++ b/3.13-rc/windows/windowsservercore-1809/Dockerfile
@@ -11,7 +11,7 @@ SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPref
 # https://github.com/docker-library/python/pull/557
 ENV PYTHONIOENCODING UTF-8
 
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f ($env:PYTHON_VERSION -replace '[a-z]+[0-9]*$', ''), $env:PYTHON_VERSION); \
 	Write-Host ('Downloading {0} ...' -f $url); \
diff --git a/3.13-rc/windows/windowsservercore-ltsc2022/Dockerfile b/3.13-rc/windows/windowsservercore-ltsc2022/Dockerfile
index 85306da66..f628580fa 100644
--- a/3.13-rc/windows/windowsservercore-ltsc2022/Dockerfile
+++ b/3.13-rc/windows/windowsservercore-ltsc2022/Dockerfile
@@ -11,7 +11,7 @@ SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPref
 # https://github.com/docker-library/python/pull/557
 ENV PYTHONIOENCODING UTF-8
 
-ENV PYTHON_VERSION 3.13.0a6
+ENV PYTHON_VERSION 3.13.0b1
 
 RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f ($env:PYTHON_VERSION -replace '[a-z]+[0-9]*$', ''), $env:PYTHON_VERSION); \
 	Write-Host ('Downloading {0} ...' -f $url); \
diff --git a/versions.json b/versions.json
index 4f3fc12cc..6982e7cd4 100644
--- a/versions.json
+++ b/versions.json
@@ -85,7 +85,7 @@
       "windows/windowsservercore-ltsc2022",
       "windows/windowsservercore-1809"
     ],
-    "version": "3.13.0a6"
+    "version": "3.13.0b1"
   },
   "3.8": {
     "get-pip": {