diff --git a/bakery.yaml b/bakery.yaml
index a22e02d..325471d 100644
--- a/bakery.yaml
+++ b/bakery.yaml
@@ -58,7 +58,7 @@ images:
           - name: Ubuntu 22.04
             primary: true
     versions:
-      - name: 2025.09.1+401.pro2
+      - name: 2025.09.2+418.pro4
         subpath: '2025.09'
         latest: true
         os:
@@ -103,7 +103,7 @@ images:
         values:
           go_version: 1.25.3
     versions:
-      - name: 2025.09.1+401.pro2
+      - name: 2025.09.2+418.pro4
         subpath: '2025.09'
         latest: true
         os:
diff --git a/workbench-session-init/2025.09/Containerfile.ubuntu2204 b/workbench-session-init/2025.09/Containerfile.ubuntu2204
index d3e155a..2234979 100644
--- a/workbench-session-init/2025.09/Containerfile.ubuntu2204
+++ b/workbench-session-init/2025.09/Containerfile.ubuntu2204
@@ -1,7 +1,7 @@
 FROM docker.io/library/golang:1.25.1 AS builder
 
 ARG DEBIAN_FRONTEND=noninteractive
-ARG WORKBENCH_VERSION="2025.09.1+401.pro2"
+ARG WORKBENCH_VERSION="2025.09.2+418.pro4"
 
 ### Initialize PTI in container ###
 RUN apt-get update -yqq --fix-missing && \
@@ -21,7 +21,7 @@ RUN apt-get update -yqq --fix-missing && \
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 RUN mkdir -p /pwb-staging && \
     WORKBENCH_VERSION_URL=$(echo -n "${WORKBENCH_VERSION}" | sed 's/+/-/g') && \
-    curl -fsSL -o /pwb-staging/rsp-session-multi-linux.tar.gz "https://s3.amazonaws.com/rstudio-ide-build/session/multi/x86_64/rsp-session-multi-linux-2025.09.1-401.pro2-x86_64.tar.gz" && \
+    curl -fsSL -o /pwb-staging/rsp-session-multi-linux.tar.gz "https://s3.amazonaws.com/rstudio-ide-build/session/multi/x86_64/rsp-session-multi-linux-2025.09.2-418.pro4-x86_64.tar.gz" && \
     mkdir -p /opt/session-components && \
     tar -C /opt/session-components -xpf /pwb-staging/rsp-session-multi-linux.tar.gz && \
     chmod 755 /opt/session-components && \
diff --git a/workbench-session-init/2025.09/entrypoint/go.sum b/workbench-session-init/2025.09/entrypoint/go.sum
index 8cda858..5a1a0fe 100644
--- a/workbench-session-init/2025.09/entrypoint/go.sum
+++ b/workbench-session-init/2025.09/entrypoint/go.sum
@@ -1,8 +1,16 @@
+github.com/otiai10/copy v1.14.0 h1:dCI/t1iTdYGtkvCuBG2BgR6KZa83PTclw4U5n2wAllU=
+github.com/otiai10/copy v1.14.0/go.mod h1:ECfuL02W+/FkTWZWgQqXPWZgW9oeKCSQ5qVfSc4qc4w=
 github.com/otiai10/copy v1.14.1 h1:5/7E6qsUMBaH5AnQ0sSLzzTg1oTECmcCmT6lvF45Na8=
 github.com/otiai10/copy v1.14.1/go.mod h1:oQwrEDDOci3IM8dJF0d8+jnbfPDllW6vUjNc3DoZm9I=
+github.com/otiai10/mint v1.5.1 h1:XaPLeE+9vGbuyEHem1JNk3bYc7KKqyI/na0/mLd/Kks=
+github.com/otiai10/mint v1.5.1/go.mod h1:MJm72SBthJjz8qhefc4z1PYEieWmy8Bku7CjcAqyUSM=
 github.com/otiai10/mint v1.6.3 h1:87qsV/aw1F5as1eH1zS/yqHY85ANKVMgkDrf9rcxbQs=
 github.com/otiai10/mint v1.6.3/go.mod h1:MJm72SBthJjz8qhefc4z1PYEieWmy8Bku7CjcAqyUSM=
+golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
 golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 h1:0A+M6Uqn+Eje4kHMK80dtF3JCXC4ykBgQG4Fe06QRhQ=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
 golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
diff --git a/workbench/2025.09/Containerfile.ubuntu2204.min b/workbench/2025.09/Containerfile.ubuntu2204.min
index 4e73ee9..80516aa 100644
--- a/workbench/2025.09/Containerfile.ubuntu2204.min
+++ b/workbench/2025.09/Containerfile.ubuntu2204.min
@@ -3,7 +3,7 @@ LABEL org.opencontainers.image.base.name="docker.io/library/ubuntu:22.04"
 
 ### ARG declarations ###
 ARG DEBIAN_FRONTEND=noninteractive
-ARG WORKBENCH_VERSION="2025.09.1+401.pro2"
+ARG WORKBENCH_VERSION="2025.09.2+418.pro4"
 ARG RSTUDIO_INSTALL_NO_LICENSE_INITIALIZATION=1
 
 ENV STARTUP_DEBUG_MODE=0
@@ -43,7 +43,7 @@ RUN apt-get update -yqq && \
 RUN curl -fsSL -o /usr/local/bin/wait-for-it.sh https://raw.githubusercontent.com/rstudio/wait-for-it/master/wait-for-it.sh && \
     chmod +x /usr/local/bin/wait-for-it.sh
 
-### Install Workbench 2025.09.1+401.pro2 ###
+### Install Workbench 2025.09.2+418.pro4 ###
 COPY --chmod=0755 workbench/2025.09/scripts/install_workbench.sh /tmp/install_workbench.sh
 RUN \
     /tmp/install_workbench.sh && \
diff --git a/workbench/2025.09/Containerfile.ubuntu2204.std b/workbench/2025.09/Containerfile.ubuntu2204.std
index e9c141c..1f431a7 100644
--- a/workbench/2025.09/Containerfile.ubuntu2204.std
+++ b/workbench/2025.09/Containerfile.ubuntu2204.std
@@ -11,7 +11,7 @@ LABEL org.opencontainers.image.base.name="docker.io/library/ubuntu:22.04"
 
 ### ARG declarations ###
 ARG DEBIAN_FRONTEND=noninteractive
-ARG WORKBENCH_VERSION="2025.09.1+401.pro2"
+ARG WORKBENCH_VERSION="2025.09.2+418.pro4"
 ARG RSTUDIO_INSTALL_NO_LICENSE_INITIALIZATION=1
 
 ENV STARTUP_DEBUG_MODE=0
@@ -54,7 +54,7 @@ RUN apt-get update -yqq && \
 RUN curl -fsSL -o /usr/local/bin/wait-for-it.sh https://raw.githubusercontent.com/rstudio/wait-for-it/master/wait-for-it.sh && \
     chmod +x /usr/local/bin/wait-for-it.sh
 
-### Install Workbench 2025.09.1+401.pro2 ###
+### Install Workbench 2025.09.2+418.pro4 ###
 COPY --chmod=0755 workbench/2025.09/scripts/install_workbench.sh /tmp/install_workbench.sh
 RUN \
     /tmp/install_workbench.sh && \
diff --git a/workbench/2025.09/scripts/install_workbench.sh b/workbench/2025.09/scripts/install_workbench.sh
index 0e35fe3..ab684fc 100644
--- a/workbench/2025.09/scripts/install_workbench.sh
+++ b/workbench/2025.09/scripts/install_workbench.sh
@@ -7,9 +7,9 @@ d="===="
 # Update apt repositories
 apt-get update -yq
 
-echo "$d Install Posit Workbench 2025.09.1+401.pro2 $d"
+echo "$d Install Posit Workbench 2025.09.2+418.pro4 $d"
 
-RSTUDIO_INSTALL_NO_LICENSE_INITIALIZATION=1 apt-get install -yf rstudio-server=2025.09.1+401.pro2
+RSTUDIO_INSTALL_NO_LICENSE_INITIALIZATION=1 apt-get install -yf rstudio-server=2025.09.2+418.pro4
 apt-mark hold rstudio-server
 
 # Clean up
diff --git a/workbench/2025.09/test/goss.yaml b/workbench/2025.09/test/goss.yaml
index a185fec..56e2def 100644
--- a/workbench/2025.09/test/goss.yaml
+++ b/workbench/2025.09/test/goss.yaml
@@ -75,7 +75,7 @@ file:
     owner: rstudio-server
     group: rstudio-server
   # Check for code-server executable (path varies based on RStudio Workbench version)
-  {{ $version_split := split "." "2025.09.1+401.pro2" }}
+  {{ $version_split := split "." "2025.09.2+418.pro4" }}
   {{ if or (ge ($version_split._0 | atoi) 2025) (and (ge ($version_split._0 | atoi) 2024) (ge ($version_split._1 | atoi) 7)) }}
   /usr/lib/rstudio-server/bin/pwb-code-server/bin/code-server:
     exists: true
@@ -142,7 +142,7 @@ command:
     exec: /usr/lib/rstudio-server/bin/rstudio-server version
     exit-status: 0
     stdout:
-      - "2025.09.1+401.pro2 Workbench"
+      - "2025.09.2+418.pro4 Workbench"
   "Verify Jupyter Notebook works":
     exec: "echo '{ \"cells\": [], \"metadata\": {}, \"nbformat\": 4, \"nbformat_minor\": 2}' | /opt/python/jupyter/bin/jupyter nbconvert --to notebook --stdin --stdout"
     timeout: 60000