diff --git a/Dockerfile b/Dockerfile
index 8e154721..a52d2d46 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -362,8 +362,7 @@ RUN set -ex; \
 ARG INSTALL_METHOD=docker-ha
 ARG OSS_ONLY
 
-# RUST_RELEASE for some packages passes this to --profile, but for promscale, if anything is set that means use
-# release mode, and if it's empty, then debug mode.
+# RUST_RELEASE for some packages passes this to --profile
 ARG RUST_RELEASE=release
 
 # split the extension builds into two steps to allow caching of successful steps
@@ -376,12 +375,10 @@ RUN set -ex; \
         /build/scripts/install_extensions timescaledb
 
 # install all rust packages in the same step to allow it to optimize for cargo-pgx installs
-ARG PROMSCALE_VERSIONS
 ARG TOOLKIT_VERSIONS
 RUN set -ex; \
     OSS_ONLY="${OSS_ONLY}" \
         RUST_RELEASE="${RUST_RELEASE}" \
-        PROMSCALE_VERSIONS="${PROMSCALE_VERSIONS}" \
         TOOLKIT_VERSIONS="${TOOLKIT_VERSIONS}" \
         /build/scripts/install_extensions rust
 
diff --git a/Makefile b/Makefile
index 7c0aa702..154b92e0 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,6 @@ PG_STAT_MONITOR?=2.1.0
 PG_LOGERRORS?=v2.1.3
 PGVECTO_RS?=0.4.0
 TIMESCALEDB_VERSIONS?=all
-PROMSCALE_VERSIONS?=all
 TOOLKIT_VERSIONS?=all
 PGBOUNCER_EXPORTER_VERSION?=0.9.0
 PGBACKREST_EXPORTER_VERSION?=0.18.0
@@ -158,7 +157,6 @@ DOCKER_BUILD_COMMAND=docker build \
 					 --build-arg POSTGIS_VERSIONS=$(POSTGIS_VERSIONS) \
 					 --build-arg OSS_ONLY="$(OSS_ONLY)" \
 					 --build-arg TIMESCALEDB_VERSIONS="$(TIMESCALEDB_VERSIONS)" \
-					 --build-arg PROMSCALE_VERSIONS="$(PROMSCALE_VERSIONS)" \
 					 --build-arg TOOLKIT_VERSIONS="$(TOOLKIT_VERSIONS)" \
 					 --build-arg PGVECTO_RS="$(PGVECTO_RS)" \
 					 --build-arg RELEASE_URL="$(DOCKER_RELEASE_URL)" \
@@ -185,7 +183,6 @@ fast: PGAI_VERSION=
 fast: PG_VERSIONS=17
 fast: POSTGIS_VERSIONS=
 fast: TOOLKIT_VERSIONS=
-fast: PROMSCALE_VERSIONS=
 fast: PGVECTORSCALE_VERSIONS=
 fast: build
 
@@ -193,7 +190,6 @@ fast: build
 latest: ALL_VERSIONS=false
 latest: TIMESCALEDB_VERSIONS=latest
 latest: TOOLKIT_VERSIONS=latest
-latest: PROMSCALE_VERSIONS=latest
 latest: PGVECTORSCALE_VERSIONS=latest
 latest: build
 
diff --git a/README.md b/README.md
index 25916e06..9c67780c 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ POSTGIS_VERSIONS="" make build
 
 For further environment variables that can be set, we point you to the [Makefile](Makefile) itself.
 
-For updating changes in versions for timescaledb, promscale, pgvectorscale, or toolkit, update `build_scripts/versions.yaml`
+For updating changes in versions for timescaledb, pgvectorscale, or toolkit, update `build_scripts/versions.yaml`
 
 ## Verify your work
 
diff --git a/build_scripts/install_extensions b/build_scripts/install_extensions
index f53bb7f3..872bf932 100755
--- a/build_scripts/install_extensions
+++ b/build_scripts/install_extensions
@@ -3,14 +3,13 @@
 SCRIPT_DIR="${BASH_SOURCE[0]%/*}"
 . "$SCRIPT_DIR"/shared.sh
 
-# This takes the requested toolkit and promscale extensions, figures out what versions of cargo-pgx/pgrx those
+# This takes the requested toolkit and other extensions, figures out what versions of cargo-pgx/pgrx those
 # versions want, and then build from the oldest pgx/pgrx to the newest so that `cargo install cargo-pgx/pgrx --version`
 # commands are only ran once. Once cargo-pgrx has been installed, run the installation for the extensions,
 # and then continue through the next cargo-pgrx version. At the end, we're left with the latest version of
 # cargo-pgrx so that the builder image can be used to test master/main branches.
 
 # we use the following variables to decide on if/what to install:
-# - PROMSCALE_VERSIONS
 # - TOOLKIT_VERSIONS
 
 [ "$1" = -n ] && { DRYRUN=true; shift; }
@@ -19,8 +18,8 @@ SCRIPT_DIR="${BASH_SOURCE[0]%/*}"
 
 what="$1"
 [ -z "$what" ] && what=all
-if [[ ! "$what" =~ ^versions|timescaledb|rust|all|promscale|pgvectorscale|toolkit$ ]]; then
-    echo "usage: $0 [-n] [versions|timescaledb|rust|all|promscale|pgvectorscale|toolkit]" >&2
+if [[ ! "$what" =~ ^versions|timescaledb|rust|all|pgvectorscale|toolkit$ ]]; then
+    echo "usage: $0 [-n] [versions|timescaledb|rust|all|pgvectorscale|toolkit]" >&2
     exit 1
 fi
 
@@ -29,7 +28,6 @@ versions)
     # this outputs the expanded versions
     echo "TIMESCALEDB_VERSIONS=\"$TIMESCALEDB_VERSIONS\""
     echo "TOOLKIT_VERSIONS=\"$TOOLKIT_VERSIONS\""
-    echo "PROMSCALE_VERSIONS=\"$PROMSCALE_VERSIONS\""
     echo "PGVECTORSCALE_VERSIONS=\"$PGVECTORSCALE_VERSIONS\""
     ;;
 
@@ -48,8 +46,6 @@ pgvectorscale | all)
 
 rust | all) install_rust_extensions;;
 
-promscale) TOOLKIT_VERSIONS="" install_rust_extensions;;
-
-toolkit) PROMSCALE_VERSIONS="" install_rust_extensions;;
+toolkit) install_rust_extensions;;
 
 esac
diff --git a/build_scripts/shared_install.sh b/build_scripts/shared_install.sh
index 55d56ec5..ec875226 100644
--- a/build_scripts/shared_install.sh
+++ b/build_scripts/shared_install.sh
@@ -112,55 +112,6 @@ install_toolkit() {
     PATH="$ORIGINAL_PATH"
 }
 
-install_promscale() {
-    local rust_release cargo_pgrx_version="$1" version="$2" pg pkg=promscale dpkg deb_version unsupported_reason pgrx_cmd
-    [ -n "$RUST_RELEASE" ] && rust_release=-r || rust_release=""
-    pgrx_cmd="$(cargo_pgrx_cmd "$cargo_pgrx_version")"
-
-    if [ "$OSS_ONLY" = true ]; then
-        log "skipped toolkit-$version due to OSS_ONLY"
-        return
-    fi
-
-    for pg in $(available_pg_versions); do
-        unsupported_reason="$(supported_promscale "$pg" "$version")"
-        if [ -n "$unsupported_reason" ]; then
-            log "$pkg-$version: $unsupported_reason"
-            continue
-        fi
-
-        read -rs dpkg deb_version <<< "$(find_deb "promscale-extension-postgresql-$pg" "$version")"
-        if [[ -n "$dpkg" && -n "$deb_version" ]]; then
-            [[ "$DRYRUN" = true ]] && { log "would install debian package $dpkg-$deb_version (cargo-$pgrx_cmd: $cargo_pgrx_version)"; continue; }
-            if install_deb "$dpkg" "$deb_version"; then continue; fi
-            log "failed installing $dpkg $deb_version"
-        else
-            log "couldn't find debian package for promscale-extension-postgresql-$pg $version"
-        fi
-
-        log "building $pkg version $version for pg$pg (cargo-$pgrx_cmd: $cargo_pgrx_version)"
-
-        [ "$DRYRUN" = true ] && continue
-
-        PATH="/usr/lib/postgresql/$pg/bin:${ORIGINAL_PATH}"
-        cargo_pgrx_init "$cargo_pgrx_version" "$pg" || continue
-        git_clone https://github.com/timescale/promscale_extension.git $pkg || continue
-        git_checkout $pkg "$version" || continue
-        (
-            cd /build/$pkg || exit 1
-            cp templates/promscale.control ./promscale.control
-            cargo "$pgrx_cmd" install ${rust_release} --features "pg$pg" || { echo "failed cargo $pgrx_cmd install for pg$pg, $pkg-$version"; exit 1; }
-        )
-        err=$?
-        if [ $err -eq 0 ]; then
-            log "installed $pkg-$version for pg$pg"
-        else
-            error "failed building $pkg-$version for pg$pg ($err)"
-        fi
-    done
-    PATH="$ORIGINAL_PATH"
-}
-
 timescaledb_post_install() {
     local pg
     # https://github.com/timescale/timescaledb/commit/6dddfaa54e8f29e3ea41dab2fe7d9f3e37cd3aae
diff --git a/build_scripts/shared_versions.sh b/build_scripts/shared_versions.sh
index 9373a6c5..b55e352d 100644
--- a/build_scripts/shared_versions.sh
+++ b/build_scripts/shared_versions.sh
@@ -88,15 +88,6 @@ install_rust_extensions() {
         pgrx_versions[$cargopgrx]+=" toolkit-$ver"
     done
 
-    for ver in $PROMSCALE_VERSIONS; do
-        cargopgrx="$(pkg_cargo_pgrx_version "promscale" "$ver")"
-        if [ -z "$cargopgrx" ]; then
-            error "no cargo-pgrx version found for promscale-$ver"
-            continue
-        fi
-        pgrx_versions[$cargopgrx]+=" promscale-$ver"
-    done
-
     sorted_pgrx_versions="$(for pgrx_ver in "${!pgrx_versions[@]}"; do echo "$pgrx_ver"; done | sort -Vu)"
     for pgrx_ver in $sorted_pgrx_versions; do
         ext_versions="$(for ext_ver in ${pgrx_versions[$pgrx_ver]}; do echo "$ext_ver"; done | sort -Vu)"
@@ -105,7 +96,6 @@ install_rust_extensions() {
             ver="$(echo "$ext_ver" | cut -d- -f2-)"
             case "$ext" in
             toolkit)   install_toolkit   "$pgrx_ver" "$ver";;
-            promscale) install_promscale "$pgrx_ver" "$ver";;
             esac
         done
     done
@@ -166,19 +156,6 @@ supported_toolkit() {
     version_is_supported toolkit "$pg" "$ver"
 }
 
-supported_promscale() {
-    local pg="$1" ver="$2"
-
-    if [ "$ARCH" != amd64 ]; then echo "unsupported arch $ARCH"; return; fi
-
-    # just attempt the build for main/master/or other branch build
-    if [[ "$ver" = main || "$ver" = master || "$ver" =~ [a-z_-]*/[A-Za-z0-9_-]* ]]; then
-        return
-    fi
-
-    version_is_supported promscale "$pg" "$ver"
-}
-
 supported_pgvectorscale() {
     local pg="$1" ver="$2"
 
@@ -199,5 +176,4 @@ require_supported_arch() {
 
 TIMESCALEDB_VERSIONS="$(requested_pkg_versions timescaledb "$TIMESCALEDB_VERSIONS")"
 TOOLKIT_VERSIONS="$(requested_pkg_versions toolkit "$TOOLKIT_VERSIONS")"
-PROMSCALE_VERSIONS="$(requested_pkg_versions promscale "$PROMSCALE_VERSIONS")"
 PGVECTORSCALE_VERSIONS="$(requested_pkg_versions pgvectorscale "$PGVECTORSCALE_VERSIONS")"
diff --git a/build_scripts/versions.yaml b/build_scripts/versions.yaml
index 43b466f6..a05ede97 100644
--- a/build_scripts/versions.yaml
+++ b/build_scripts/versions.yaml
@@ -128,35 +128,6 @@ timescaledb:
     pg-min: 14
     pg-max: 17
 
-promscale:
-  0.5.0:
-    arch: amd64
-    pg-max: 14
-    cargo-pgrx: 0.3.1
-  0.5.1:
-    arch: amd64
-    pg-max: 14
-    cargo-pgrx: 0.3.1
-  0.5.2:
-    arch: amd64
-    pg-max: 14
-    cargo-pgrx: 0.3.1
-  0.5.4:
-    arch: amd64
-    pg-max: 14
-    cargo-pgrx: 0.3.1
-  0.6.0:
-    arch: amd64
-    pg-max: 14
-    cargo-pgrx: 0.4.5
-  0.7.0:
-    arch: amd64
-    pg-max: 14
-    cargo-pgrx: 0.4.5
-  0.8.0:
-    arch: amd64
-    cargo-pgrx: 0.6.1
-
 toolkit:
   1.6.0:
     arch: amd64
diff --git a/cicd/shared.sh b/cicd/shared.sh
index 11c3475d..99301460 100644
--- a/cicd/shared.sh
+++ b/cicd/shared.sh
@@ -60,7 +60,6 @@ check_base_components() {
     local pg="$1" lib="$2"
 
     check_timescaledb "$pg" "$lib"
-    check_promscale "$pg" "$lib"
     check_pgvectorscale "$pg" "$lib"
     check_toolkit "$pg" "$lib"
     check_oss_extensions "$pg" "$lib"
@@ -119,56 +118,18 @@ check_oss_extensions() {
     if [ "$OSS_ONLY" != true ]; then return 0; fi
 
     local pg="$1" lib="$2"
-    for pattern in timescaledb_toolkit promscale; do
+    for pattern in timescaledb_toolkit; do
         files="$(find "$lib" -maxdepth 1 -name "${pattern}*")"
         if [ -n "$files" ]; then error "found $pattern files for pg$pg when OSS_ONLY is true"; fi
     done
 }
 
-check_promscale() {
-    if [ -z "$PROMSCALE_VERSIONS" ]; then return; fi
-    local pg="$1" lib="$2" ver found=false
-
-    if [ "$OSS_ONLY" = true ]; then
-        # we don't do anything here as we depend on `check_oss_extensions` to flag on inappropriate versions of promscale
-        return
-    fi
-
-    if [ "$ARCH" != amd64 ]; then
-        # no arm64 promscale packages
-        return
-    fi
-
-    # record an empty version so we'll get an empty table row if we don't have any versions
-    record_ext_version promscale_extension "$pg" ""
-
-    for ver in $PROMSCALE_VERSIONS; do
-        if [[ "$ver" = master || "$ver" = main ]]; then
-            log "skipping looking for promscale-$ver"
-            continue
-        fi
-        if [ -s "$lib/promscale-$ver.so" ]; then
-            found=true
-            record_ext_version promscale_extension "$pg" "$ver"
-        else
-            unsupported_reason="$(supported_promscale "$pg" "$ver")"
-            if [ -n "$unsupported_reason" ]; then
-                log "skipped: promscale-$ver: $unsupported_reason"
-            else
-                error "promscale-$ver not found for pg$pg"
-            fi
-        fi
-    done
-
-    if [[ "$found" = false && "$pg" -lt 16 ]]; then error "no promscale versions found for pg$pg"; fi
-}
-
 check_toolkit() {
     if [ -z "$TOOLKIT_VERSIONS" ]; then return; fi
     local pg="$1" lib="$2" found=false
 
     if [ "$OSS_ONLY" = true ]; then
-        # we don't do anything here as we depend on `check_oss_extensions` to flag on inappropriate versions of promscale
+        # we don't do anything here as we depend on `check_oss_extensions` to flag on inappropriate versions
         return
     fi
 
diff --git a/cicd/version_info.sql b/cicd/version_info.sql
index 1d734ac6..a636c70e 100644
--- a/cicd/version_info.sql
+++ b/cicd/version_info.sql
@@ -9,7 +9,7 @@ WITH versions(name, version) AS (
     FROM
         pg_available_extensions
     WHERE
-        name IN ('timescaledb', 'postgis', 'pg_prometheus', 'timescale_prometheus_extra', 'promscale', 'vectorscale', 'ai', 'timescaledb_toolkit', 'timescale_analytics')
+        name IN ('timescaledb', 'postgis', 'pg_prometheus', 'timescale_prometheus_extra', 'vectorscale', 'ai', 'timescaledb_toolkit', 'timescale_analytics')
     UNION ALL
     SELECT
         'postgresql.version',
@@ -33,14 +33,6 @@ WITH versions(name, version) AS (
     WHERE
         name = 'timescaledb'
     UNION ALL
-    SELECT
-        'promscale.available_versions',
-        string_agg(version, ',' ORDER BY version)
-    FROM
-        pg_available_extension_versions
-    WHERE
-        name = 'promscale'
-    UNION ALL
     SELECT
         'vectorscale.available_versions',
         string_agg(version, ',' ORDER BY version)