diff --git a/install/install-tk.iss b/install/install-tk.iss
index e742f075f..9370343c3 100644
--- a/install/install-tk.iss
+++ b/install/install-tk.iss
@@ -3,11 +3,11 @@
 ; AppID can never be changed as subsequent installations require the same installation ID each time
 AppID=FHIRToolkit
 AppName=Health Intersections FHIR Toolkit
-AppVerName=FHIRToolkit v3.4.39
+AppVerName=FHIRToolkit v3.4.40
 
 ; compilation control
 OutputDir=..\install\build
-OutputBaseFilename=fhirtoolkit-win64-3.4.39
+OutputBaseFilename=fhirtoolkit-win64-3.4.40
 Compression=lzma2/ultra64
 
 ; 64 bit
@@ -32,11 +32,11 @@ UninstallFilesDir={app}\uninstall
 ; win2000+ add/remove programs support
 AppPublisher=Health Intersections P/L
 AppPublisherURL=http://www.healthintersections.com.au
-AppVersion=3.4.39
+AppVersion=3.4.40
 AppSupportURL=https://github.com/grahamegrieve/fhirserver
 AppUpdatesURL=https://github.com/grahamegrieve/fhirserver
 AppCopyright=Copyright (c) Health Intersections Pty Ltd 2020+
-VersionInfoVersion=3.4.39.0
+VersionInfoVersion=3.4.40.0
 
 ; dialog support
 LicenseFile=..\license
diff --git a/install/install.iss b/install/install.iss
index 0be7a0ff9..d1db1fd26 100644
--- a/install/install.iss
+++ b/install/install.iss
@@ -3,11 +3,11 @@
 ; AppID can never be changed as subsequent installations require the same installation ID each time
 AppID=FHIRServer
 AppName=Health Intersections FHIR Server
-AppVerName=FHIRServer v3.4.39
+AppVerName=FHIRServer v3.4.40
 
 ; compilation control
 OutputDir=..\install\build
-OutputBaseFilename=fhirserver-win64-3.4.39
+OutputBaseFilename=fhirserver-win64-3.4.40
 Compression=lzma2/ultra64
 
 ; 64 bit
@@ -34,11 +34,11 @@ UninstallFilesDir={app}\uninstall
 ; win2000+ add/remove programs support
 AppPublisher=Health Intersections P/L
 AppPublisherURL=http://www.healthintersections.com.au
-AppVersion=3.4.39
+AppVersion=3.4.40
 AppSupportURL=https://github.com/grahamegrieve/fhirserver
 AppUpdatesURL=https://github.com/grahamegrieve/fhirserver
 AppCopyright=Copyright (c) Health Intersections Pty Ltd 2011+
-VersionInfoVersion=3.4.39.0
+VersionInfoVersion=3.4.40.0
 
 ; dialog support
 LicenseFile=..\license
diff --git a/library/version.inc b/library/version.inc
index 2cf97dade..254fc34c7 100644
--- a/library/version.inc
+++ b/library/version.inc
@@ -1,3 +1,3 @@
- FHIR_CODE_FULL_VERSION = '3.4.40-SNAPSHOT';
- FHIR_CODE_RELEASE_DATE = '2025-01-27';
- FHIR_CODE_RELEASE_DATETIME = '20250127064928.849Z';
+ FHIR_CODE_FULL_VERSION = '3.4.41-SNAPSHOT';
+ FHIR_CODE_RELEASE_DATE = '2025-01-29';
+ FHIR_CODE_RELEASE_DATETIME = '20250129131521.813Z';
diff --git a/release-notes.md b/release-notes.md
index 92dae120f..b3d636a04 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,7 +1,7 @@
 ## Change Notes:
 
-* Implement displayLanguage checking
+* 
 
 ## Conformance Notes:
 
-* tx.fhir.org passed 297 HL7 terminology service tests (mode 'tx.fhir.org', tests v1.7.2, runner v6.5.5)
\ No newline at end of file
+* 
\ No newline at end of file
diff --git a/server/fhirconsole.lpi b/server/fhirconsole.lpi
index 5b4e4a5c6..7313ead45 100644
--- a/server/fhirconsole.lpi
+++ b/server/fhirconsole.lpi
@@ -18,7 +18,7 @@
     <VersionInfo>
       <MajorVersionNr Value="3"/>
       <MinorVersionNr Value="4"/>
-      <RevisionNr Value="39"/>
+      <RevisionNr Value="40"/>
       <Attributes pvaDebug="False"/>
     </VersionInfo>
     <BuildModes Count="8">
diff --git a/server/fhirserver.dproj b/server/fhirserver.dproj
index 1474f23d0..a1ea70a03 100644
--- a/server/fhirserver.dproj
+++ b/server/fhirserver.dproj
@@ -92,7 +92,7 @@
     <VerInfo_IncludeVerInfo>true</VerInfo_IncludeVerInfo>
     <VerInfo_MajorVer>3</VerInfo_MajorVer>
     <VerInfo_MinorVer>4</VerInfo_MinorVer>
-    <VerInfo_Release>39</VerInfo_Release>
+    <VerInfo_Release>40</VerInfo_Release>
     <VerInfo_Debug>false</VerInfo_Debug>
   </PropertyGroup>
   <PropertyGroup Condition="&apos;$(Base_Win32)&apos;!=&apos;&apos;">
@@ -167,7 +167,7 @@
     <DCC_RangeChecking>true</DCC_RangeChecking>
     <DCC_DebugDCUs>false</DCC_DebugDCUs>
     <VerInfo_MajorVer>3</VerInfo_MajorVer>
-    <VerInfo_Release>39</VerInfo_Release>
+    <VerInfo_Release>40</VerInfo_Release>
     <AppDPIAwarenessMode>none</AppDPIAwarenessMode>
     <VerInfo_MinorVer>4</VerInfo_MinorVer>
     <VerInfo_Debug>false</VerInfo_Debug>
diff --git a/server/fhirserver.lpi b/server/fhirserver.lpi
index 7c120b995..8ac98ef77 100644
--- a/server/fhirserver.lpi
+++ b/server/fhirserver.lpi
@@ -19,7 +19,7 @@
       <UseVersionInfo Value="True"/>
       <MajorVersionNr Value="3"/>
       <MinorVersionNr Value="4"/>
-      <RevisionNr Value="39"/>
+      <RevisionNr Value="40"/>
       <Attributes pvaDebug="False"/>
     </VersionInfo>
     <BuildModes Count="8">
diff --git a/toolkit2/fhirtoolkit.lpi b/toolkit2/fhirtoolkit.lpi
index a7eb58745..14f64d3e8 100644
--- a/toolkit2/fhirtoolkit.lpi
+++ b/toolkit2/fhirtoolkit.lpi
@@ -17,7 +17,7 @@
       <UseVersionInfo Value="True"/>
       <MajorVersionNr Value="3"/>
       <MinorVersionNr Value="4"/>
-      <RevisionNr Value="39"/>
+      <RevisionNr Value="40"/>
       <Attributes pvaDebug="False"/>
     </VersionInfo>
     <BuildModes>