diff --git a/.appveyor.yml b/.appveyor.yml
index 7b91bb3ce..c2f885c00 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -22,10 +22,10 @@ environment:
 
   matrix:
     - MUMBLE_ENVIRONMENT_TRIPLET: 'x64-windows-static-md'
-      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.4.x~2021-04-26~7da4529f.x64'
+      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.5.x~2021-07-27~64f88807.x64'
       VCVARS_PATH: 'C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Auxiliary/Build/vcvars64.bat'
     - MUMBLE_ENVIRONMENT_TRIPLET: 'x86-windows-static-md'
-      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.4.x~2021-04-26~7da4529f.x86'
+      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.5.x~2021-07-27~64f88807.x86'
       VCVARS_PATH: 'C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Auxiliary/Build/vcvarsamd64_x86.bat'
 
 install:
diff --git a/.ci/azure-pipelines/main-pr.yml b/.ci/azure-pipelines/main-pr.yml
index 0a65e99aa..cb325b08e 100644
--- a/.ci/azure-pipelines/main-pr.yml
+++ b/.ci/azure-pipelines/main-pr.yml
@@ -24,7 +24,7 @@ jobs:
     pool:
       vmImage: 'windows-latest'
     variables:
-      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.4.x~2021-04-26~7da4529f.x64'
+      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.5.x~2021-07-27~64f88807.x64'
       MUMBLE_ENVIRONMENT_TRIPLET: 'x64-windows-static-md'
       VCVARS_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat'
     steps:
@@ -39,7 +39,7 @@ jobs:
     pool:
       vmImage: 'windows-latest'
     variables:
-      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.4.x~2021-04-26~7da4529f.x86'
+      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.5.x~2021-07-27~64f88807.x86'
       MUMBLE_ENVIRONMENT_TRIPLET: 'x86-windows-static-md'
       VCVARS_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsamd64_x86.bat'
     steps:
@@ -61,7 +61,7 @@ jobs:
     pool:
       vmImage: 'macOS-latest'
     variables:
-      MUMBLE_ENVIRONMENT_VERSION: 'macos-static-1.4.x~2021-04-26~7da4529f.x64'
+      MUMBLE_ENVIRONMENT_VERSION: 'macos-static-1.5.x~2021-07-27~64f88807.x64'
     steps:
     - template: steps_macos.yml
       parameters:
diff --git a/.ci/azure-pipelines/main.yml b/.ci/azure-pipelines/main.yml
index a1b628154..52e218a62 100644
--- a/.ci/azure-pipelines/main.yml
+++ b/.ci/azure-pipelines/main.yml
@@ -22,7 +22,7 @@ jobs:
     pool:
       vmImage: 'windows-latest'
     variables:
-      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.4.x~2021-04-26~7da4529f.x64'
+      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.5.x~2021-07-27~64f88807.x64'
       MUMBLE_ENVIRONMENT_TRIPLET: 'x64-windows-static-md'
       VCVARS_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat'
     steps:
@@ -37,7 +37,7 @@ jobs:
     pool:
       vmImage: 'windows-latest'
     variables:
-      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.4.x~2021-04-26~7da4529f.x86'
+      MUMBLE_ENVIRONMENT_VERSION: 'windows-static-1.5.x~2021-07-27~64f88807.x86'
       MUMBLE_ENVIRONMENT_TRIPLET: 'x86-windows-static-md'
       VCVARS_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsamd64_x86.bat'
     steps:
@@ -62,6 +62,6 @@ jobs:
       - agent.os -equals Darwin
     variables:
       MUMBLE_ENVIRONMENT_STORE: '~/MumbleBuild'
-      MUMBLE_ENVIRONMENT_VERSION: 'latest-1.4.x'
+      MUMBLE_ENVIRONMENT_VERSION: 'latest-1.5.x'
     steps:
     - template: steps_macos.yml