diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fe07a3a..f3d5e37c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 
 - This release includes a workaround to make bitsery compile with GCC 13 due to
   changes in transitive header includes.
+- The tomlplusplus dependency has been updated to target version 3.4.0.
 
 ## [5.0.5] - 2023-05-07
 
diff --git a/meson.build b/meson.build
index e720fe7c..b1932afc 100644
--- a/meson.build
+++ b/meson.build
@@ -270,8 +270,10 @@ dbus_dep = dependency('dbus-1').partial_dependency(compile_args : true, includes
 function2_dep = dependency('function2', version : '>=4.0.0')
 ghc_filesystem_dep = dependency('ghc_filesystem', modules : 'ghcFilesystem::ghc_filesystem', version : '>=1.5.0')
 threads_dep = dependency('threads')
-# Tomlplusplus recently added a shraed library version. We don't want to link to that.
-tomlplusplus_dep = dependency('tomlplusplus', version : '>=3.3.0', default_options : ['compile_library=false']).partial_dependency(compile_args : true, includes : true)
+# Tomlplusplus recently added a shraed library version. We don't want to link to
+# that. `compile_library` is deprecated but it (incorrectly) defaults to `true`
+# so we can't omit it.
+tomlplusplus_dep = dependency('tomlplusplus', version : '>=3.4.0', default_options : ['compile_library=false']).partial_dependency(compile_args : true, includes : true)
 
 dl_dep = declare_dependency(link_args : '-ldl')
 rt_dep = declare_dependency(link_args : '-lrt')
diff --git a/subprojects/tomlplusplus.wrap b/subprojects/tomlplusplus.wrap
index a187b5f0..6f99fd6f 100644
--- a/subprojects/tomlplusplus.wrap
+++ b/subprojects/tomlplusplus.wrap
@@ -1,7 +1,7 @@
 [wrap-git]
 url = https://github.com/marzer/tomlplusplus.git
-# Tag v3.3.0
-revision = c635f218c0aefc801d9748841930365e54fe3089
+# Tag v3.4.0
+revision = 30172438cee64926dc41fdd9c11fb3ba5b2ba9de
 depth = 1
 
 [provide]