diff --git a/projects/openslide.org/package.yml b/projects/openslide.org/package.yml
index 8f666968..df6b31d9 100644
--- a/projects/openslide.org/package.yml
+++ b/projects/openslide.org/package.yml
@@ -19,9 +19,13 @@ dependencies:
 build:
   dependencies:
     freedesktop.org/pkg-config: '*'
-  script: |
-    ./configure $ARGS
-    make --jobs {{ hw.concurrency }} install
+  script:
+    # versions didn't get bumped in 4.0.0
+    - run: |
+        sed -i.bak -e 's/3\.4\.1/{{version}}/g' configure
+        rm configure.bak
+    - ./configure $ARGS
+    - make --jobs {{ hw.concurrency }} install
   env:
     ARGS:
       - --prefix="{{prefix}}"
@@ -35,4 +39,5 @@ test:
   dependencies:
     freedesktop.org/pkg-config: '*'
   script:
-    pkg-config --modversion openslide | grep {{version}}
\ No newline at end of file
+    - pkg-config --modversion openslide
+    - pkg-config --modversion openslide | grep {{version}}
\ No newline at end of file