diff --git a/DESCRIPTION b/DESCRIPTION
index 36435eb6c..6f7b49a0f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -67,7 +67,7 @@ Config/needs/dependencies:
     filelock,
     jsonlite,
     pkgbuild,
-    pkgcache,
+    r-lib/pkgcache,
     r-lib/pkgdepends,
     pkgsearch,
     processx,
diff --git a/NEWS.md b/NEWS.md
index 470ce6359..d533d8737 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,12 @@
 # pak (development version)
 
+* The metadata cache now does not use source URLs for packages in `Archive`
+  on Posit Package Manager repositories. This URLs may serve a different
+  package, even a source package when the main URL for the same package
+  serves a binary package. The alternative URLs are not needed on PPM,
+  anyway, because PPM is in a consistent state w.r.t. metadata and
+  package files (#623).
+
 # pak 0.7.2
 
 * pak now supports using parameters for all packages with the
diff --git a/src/library/pkgcache/DESCRIPTION b/src/library/pkgcache/DESCRIPTION
index 1240103eb..9c2104c61 100644
--- a/src/library/pkgcache/DESCRIPTION
+++ b/src/library/pkgcache/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: pkgcache
 Title: Cache 'CRAN'-Like Metadata and R Packages
-Version: 2.2.2
+Version: 2.2.2.9000
 Authors@R: c(
     person("Gábor", "Csárdi", , "csardi.gabor@gmail.com", role = c("aut", "cre")),
     person("Posit Software, PBC", role = c("cph", "fnd"))
@@ -22,11 +22,10 @@ Config/Needs/website: tidyverse/tidytemplate
 Config/testthat/edition: 3
 Encoding: UTF-8
 Language: en-US
+Roxygen: list(markdown = TRUE, r6 = FALSE)
 RoxygenNote: 7.3.1.9000
 NeedsCompilation: yes
-Packaged: 2024-04-04 06:07:27 UTC; gaborcsardi
+Packaged: 2024-05-03 09:58:15 UTC; gaborcsardi
 Author: Gábor Csárdi [aut, cre],
   Posit Software, PBC [cph, fnd]
 Maintainer: Gábor Csárdi <csardi.gabor@gmail.com>
-Repository: CRAN
-Date/Publication: 2024-04-04 06:33:02 UTC
diff --git a/src/library/pkgcache/NEWS.md b/src/library/pkgcache/NEWS.md
index 1dd2452e2..71beb0e96 100644
--- a/src/library/pkgcache/NEWS.md
+++ b/src/library/pkgcache/NEWS.md
@@ -1,3 +1,12 @@
+# pkgcache (development version)
+
+* The metadata cache now does not use source URLs for packages in `Archive`
+  on Posit Package Manager repositories. This URLs may serve a different
+  package, even a source package when the main URL for the same package
+  serves a binary package. The alternative URLs are not needed on PPM,
+  anyway, because PPM is in a consistent state w.r.t. metadata and
+  package files (https://github.com/r-lib/pak/issues/623).
+
 # pkgcache 2.2.2
 
 * pkgcache now treats R 4.5.x (current R-devel) macOS binaries
diff --git a/src/library/pkgcache/R/packages-gz.R b/src/library/pkgcache/R/packages-gz.R
index b74067adb..1b9cc26c9 100644
--- a/src/library/pkgcache/R/packages-gz.R
+++ b/src/library/pkgcache/R/packages-gz.R
@@ -308,8 +308,13 @@ packages_make_sources <- function(mirror, platform, target, repodir,
   # We don't use Archive for recommended packages, until this is
   # fixed in RSPM: https://github.com/rstudio/package-manager/issues/10471
   # To work around: https://github.com/r-lib/pak/issues/467
+
+  # We also don't use it on PPM (Linux), because PPM might serve a source
+  # package on Archive, or a different binary build:
+  # https://github.com/r-lib/pak/issues/623
   recommended <- package %in% recommended_packages()
-  cransrc <- type == "cran" & platform == "source" & !recommended
+  ppm <- grepl("__linux__", url)
+  cransrc <- type == "cran" & platform == "source" & !recommended & !ppm
   result[cransrc] <- zip_vecs(url[cransrc], url2[cransrc])
 
   others <- vlapply(result, is.null)