diff --git a/Dockerfile.mri.erb b/Dockerfile.mri.erb
index d06be383..ba8656fb 100644
--- a/Dockerfile.mri.erb
+++ b/Dockerfile.mri.erb
@@ -108,7 +108,7 @@ ENV BASH_ENV=/etc/rubybashrc
 ##
 USER rubyuser
 
-ENV RBENV_RUBIES="3.1.6 3.4.1"
+ENV RBENV_RUBIES="3.1.7 3.4.5"
 
 # Install the bootstrap rubies
 RUN bash -c " \
@@ -148,21 +148,21 @@ RUN sudo mkdir -p /usr/local/rake-compiler && \
 xrubies_build_plan = if platform =~ /x64-mingw-ucrt/
   [
     # Rubyinstaller-3.1+ is platform x64-mingw-ucrt
-    ["3.4.1:3.3.7:3.2.6:3.1.6", "3.4.1"],
+    ["3.4.5:3.3.9:3.2.9:3.1.7", "3.4.5"],
   ]
 elsif platform =~ /aarch64-mingw-ucrt/
   [
-    ["3.4.1", "3.1.6"],
+    ["3.4.5", "3.1.7"],
   ]
 elsif platform =~ /x64-mingw32/
   [
     # Rubyinstaller prior to 3.1 is platform x64-mingw32
-    ["3.0.7:2.7.8", "3.1.6"],
+    ["3.0.7:2.7.8", "3.1.7"],
   ]
 else
   [
-    ["2.7.8", "3.1.6"],
-    ["3.4.1:3.3.7:3.2.6:3.1.6:3.0.7", "3.4.1"],
+    ["2.7.8", "3.1.7"],
+    ["3.4.5:3.3.9:3.2.9:3.1.7:3.0.7", "3.4.5"],
   ]
 end
 
@@ -174,7 +174,7 @@ RUN bash -c " \
   export CPPFLAGS='<%= "-D__USE_MINGW_ANSI_STDIO=1" if platform =~ /x64-mingw-ucrt/ %>' && \
   export CFLAGS='-O1 -fno-omit-frame-pointer -fno-fast-math -fstack-protector-strong <%= strip %>' && \
   export LDFLAGS='-pipe <%= strip %>' && \
-  <%= "export LIBS='-l:libssp.a' &&" if platform =~ /mingw/ %> \
+  <%= "export LIBS='-l:libssp.a -lpthread' &&" if platform =~ /mingw/ %> \
   <%= "export CC=#{target}-clang &&" if platform =~ /darwin/ %> \
   export MAKE='make V=1' && \
   rake-compiler cross-ruby VERSION=<%= xrubies %> HOST=<%= target %> && \
@@ -264,8 +264,8 @@ RUN echo 'source /etc/profile.d/rcd-env.sh' >> /etc/rubybashrc
 # Install sudoers configuration
 COPY build/sudoers /etc/sudoers.d/rake-compiler-dock
 
-RUN bash -c "rbenv global 3.4.1"
+RUN bash -c "rbenv global 3.4.5"
 
-ENV RUBY_CC_VERSION=3.4.1:3.3.7:3.2.6:3.1.6:3.0.7:2.7.8
+ENV RUBY_CC_VERSION=3.4.5:3.3.9:3.2.9:3.1.7:3.0.7:2.7.8
 
 CMD bash
diff --git a/lib/rake_compiler_dock.rb b/lib/rake_compiler_dock.rb
index 22cb513b..ecd87949 100644
--- a/lib/rake_compiler_dock.rb
+++ b/lib/rake_compiler_dock.rb
@@ -82,20 +82,20 @@ def exec(*args, &block)
   #
   #   RakeCompilerDock.cross_rubies
   #   # => {
-  #   #      "3.4" => "3.4.1",
-  #   #      "3.3" => "3.3.5",
-  #   #      "3.2" => "3.2.6",
-  #   #      "3.1" => "3.1.6",
+  #   #      "3.4" => "3.4.5",
+  #   #      "3.3" => "3.3.9",
+  #   #      "3.2" => "3.2.9",
+  #   #      "3.1" => "3.1.7",
   #   #      "3.0" => "3.0.7",
   #   #      "2.7" => "2.7.8",
   #   #    }
   #
   def cross_rubies
     {
-      "3.4" => "3.4.1",
-      "3.3" => "3.3.7",
-      "3.2" => "3.2.6",
-      "3.1" => "3.1.6",
+      "3.4" => "3.4.5",
+      "3.3" => "3.3.9",
+      "3.2" => "3.2.9",
+      "3.1" => "3.1.7",
       "3.0" => "3.0.7",
       "2.7" => "2.7.8",
     }
@@ -112,13 +112,13 @@ def cross_rubies
   #
   # For example:
   #   RakeCompilerDock.ruby_cc_version("2.7", "3.4")
-  #   # => "3.4.1:2.7.8"
+  #   # => "3.4.5:2.7.8"
   #
   #   RakeCompilerDock.ruby_cc_version("~> 3.2")
-  #   # => "3.4.1:3.3.7:3.2.6"
+  #   # => "3.4.5:3.3.9:3.2.9"
   #
   #   RakeCompilerDock.ruby_cc_version(Gem::Requirement.new("~> 3.2"))
-  #   # => "3.4.1:3.3.7:3.2.6"
+  #   # => "3.4.5:3.3.9:3.2.9"
   #
   def ruby_cc_version(*requirements)
     cross = cross_rubies